Sunday
April 20, 2014

Search: If each atom has a radius of 1.43 , what is the length of a side of the unit cell?

Number of results: 2,793

Science
Hello van some one show me how to draw a dot and cross diagramm for 1 lithium atom and 1 fluorine atom(Lif) and also a diagram for 1 magnesium atom and 1 oxygen atom (MgO) Thankyou Paul.
Monday, March 28, 2011 at 4:07am by Paul

Science
Atom building game board has 17 protons, 18 neutrons, and 18 electrons. *What is the atom that's represented on the game board. *What is the total charge on this atom? *What is the mass # of this atom? *What do you call an atom that different #'s of protons and neutrons? *What...
Friday, September 21, 2007 at 8:51pm by Sonic

Chemistry
Which atom has the smallest valence p atomic orbital? -Carbon -Nitrogen -Sulfur Why? A. That atom has the highest electronegativity. B. That atom has the fewest number of electrons. C. That atom does not have electrons in p orbitals. D. The valence electrons for that atom have...
Thursday, April 19, 2012 at 7:24pm by Pooya

chemistry
the model of the atom that pictured the atom with electrons struck randomly throughtout the mass of the atom was called the
Wednesday, October 27, 2010 at 7:48pm by 000

Chemistry
which atom has the least attraction for the electrons in a bond between that atom and an atom of hydrogen? (1) carbon (2)nitrogen (3)oxygen (4) fluorine
Wednesday, December 1, 2010 at 11:08pm by Anonymous

Zoology
electron H-atom C-atom Na-atom glucose molecule nucleotide mitochondria fungal cell heart tundra
Sunday, August 29, 2010 at 11:28am by Anonymous

physics
A neon atom (m = 20.0 u) makes a perfectly elastic collision with another atom at rest. After the impact, the neon atom travels away at a 55.2° angle from its original direction and the unknown atom travels away at a 51.8° angle. What is the mass of the unknown atom? [Hint: ...
Thursday, October 20, 2011 at 11:30pm by kago

chem
1. under what circumstances is the molecular geometry around a single central atom the same as the electron group geometry around the central atom? 2.If all of the electron groups around a single central atom are bonding, and the same outer atom is bonded to the central atom ...
Monday, April 28, 2008 at 12:00am by natash

CHEMISTRY
The factor that affects how easily an electron can be removed from an atom is the A. structure of the atom. B. size of the atom. C. temperature of the environment. D. surrounding atoms.
Wednesday, June 18, 2008 at 12:14pm by DELIA

Chemistry
For each of the following, enter the number of covalent bonds that the atom can form: (A) One atom of carbon (B) One atom of sulfur (C) One atom of nitrogen with no net charge (D) One atom of nitrogen with positive net charge (E) One atom of oxygen with no net charge (F) One ...
Thursday, March 7, 2013 at 1:31am by qwerty

Physical Science
The factor that affects how easily an electron can be removed from an atom is the A. surrounding atoms. B. temperature of the environment. C. structure of the atom. D. size of the atom.
Friday, March 7, 2008 at 7:05pm by Anonymous

Physics
Could someone help me with these questions. . . please 1. How does Rutherford’s model of the atom account for the back – scattering of alpha particles directed at the gold leaf 2. The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. ...
Monday, November 12, 2007 at 2:40pm by Mike

physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n=1 labels the lowest, or “ground” state, n=3 is the third state, and so on. If the atom’s diameter is 1x10-10m in its lowest ...
Tuesday, November 6, 2007 at 10:29am by Will

Physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n=1 labels the lowest or “ground” state, n=3 is the third state, and so on. If the atom’s diameter is 1x10-10m in its lowest ...
Thursday, July 1, 2010 at 2:16pm by Richard

science
Which statement best compares an atom to an ion? A.An ion is an atom that has lost its charge. B.An ion is an atom that has gained or lost protons. C.An ion is an atom that has gained or lost electrons. D.An ion is an atom that has a different number of neutrons.
Friday, January 24, 2014 at 11:43am by victoria

Science
Suppose a large atom bonds with a small atom. Predict whether the properties of the new molecule will be the same as the large atom, the same as the small atom, or different from both atoms.
Wednesday, November 19, 2008 at 8:16pm by Amber

Science
Suppose a large atom bonds with a small atom. Predict whether the properties of the new molecule will be the same as the large atom, the same as the small atom, or different from both atoms.
Wednesday, November 19, 2008 at 8:16pm by Anonymous

Science
Suppose a large atom bonds with a small atom. Predict whether the properties of the new molecule will be the same as the large atom, the same as the small atom, or different from both atoms.
Wednesday, November 19, 2008 at 8:16pm by ivana

Zoology
Can you rank these from the smallest to the largest? Heart carbon atom sodium atom electron nucleotide tundra mitochondria glucose molecule fungal cell hydrogen atom
Sunday, August 29, 2010 at 11:28am by Marcus

Physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n^2, where n=1 labels the lowest or "ground" state, n=3 is the thrid state, and so on. If the atom's diameter is 1 x 10^(-10)m in its ...
Monday, November 16, 2009 at 3:08pm by Lauren

Chemistryy
Identify the observations of Ernest Rutherford's experiment with the gold foil. Where he experimented on alpha particles and deflection. Check all that apply.... 1) a positive charge is spread equally over the atom 2) THE MAJORity of the space inside the atom is empty space. 3...
Monday, August 29, 2011 at 12:14am by Dalton

physics
The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n = 1 labels the lowest, or "ground" state, n = 2 is the second state, n = 3 is the third state, and so on. If the atom's ...
Thursday, August 4, 2011 at 11:10am by stacy

Chemistry --- chemistry ---
Another way of looking at it--an ion is an atom (sometimes more than one atom) with a + or - charge on it. example of one atom--Na atom; Na^+ ion examle of more than one atom--SO4^2-
Thursday, September 13, 2012 at 2:08am by DrBob222

chemistry
1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist in Thompson's plum pudding model of the atom? 3) what flaws exist in Rutherford's model of the atom? 4) what flaws in Bohr's model of the atom? 5) do any flaws exist in the modern quantum model of the atom...
Wednesday, November 14, 2007 at 8:01pm by Anonymous

chemistry
1 The size of cation is ...... and the anion is ........ than atom. 2 The removal of an electron from an atom results in the formation of a ....... the size of which is ........ than that of the atom.
Thursday, May 3, 2012 at 6:33am by pooja

science
What's to understand. If brackets (you used parentheses which is the usual way to do it) or parentheses, it means to multiply everything inside the parenthese by the number in the subscript. So. Mg(OH)2 has 1 Mg atom, 2 O atoms and 2 H atoms. MgO has 1 Mg atom and 1 O atom. Al...
Friday, November 2, 2007 at 9:29pm by DrBob222

chemistry
1.which of the following is the most polar bond? explain n-f c-f h-f o-f 2. in the trigonal bipyramidal geometry, which position - axial or equatorial - do nonbonding electrons prefer? why? 3.under what circumstances is the molecular geometry around a single central atom the ...
Friday, April 23, 2010 at 1:55am by katherine

Chemistry
so you have an atom at each corner. Draw a line thru corner to corner along the diagnol. One atom in the center of the face. So the length of the line is 4radii. So the edge of the cell must be .707*4 radii. You can get the radii from the periodic table. Your teacher might ...
Sunday, February 21, 2010 at 8:09pm by bobpursley

chemistry
The six orbitals on the central atom, As, are sp^3d^2 hybrids. That is the kind of hybridization you have in an octahedral structure, "XY6". Each of the hybrid orbitals on the As atom is forming a sigma bond with the half filled p orbital on an F atom.
Wednesday, September 30, 2009 at 6:38pm by GK

Physics
Can someone help me with this, i have started it but cant get it to work out. The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n=1 labels the lowest, or “ground” state, n=3 is ...
Saturday, November 10, 2007 at 7:45am by Aaron

Chemistry
Ok an atom loses an electron becomes positive-atom gainin electron becomes negative? Is that correct? thats w/ 1 electron in outer shell of one atom and the other atom receiving an electron to fill its outer shell
Tuesday, January 18, 2011 at 4:17pm by Brenda

Physics
The allowed orbits for the electron around the nucleus of the hydrogen atom are explained by de Broglie as ... a. Quantized values for the total energy of the electron in the atom b. Quantized values for the angular momentum of the electron in the atom c. Standing waves for ...
Sunday, April 4, 2010 at 7:19am by Sandra

Physics
A helium-4 atom falls from a height h into a tank of gaseous helium atoms at 300 K. What is h in meters if the temperature of the helium atoms remains at 300 K after the falling atom enters the tank? Details and assumptions The acceleration of gravity is −9.8 m/s2. As ...
Tuesday, April 2, 2013 at 8:59am by Crow

chemistry
I need help on a few of these. A. How many protons are in one atom of fluorine - 19? B. How many neutrons are in one atom of potassium - 39? C. How many electrons are in one neutral atom of V - 51? D. What is the symbol for the element that has 78 protons? E. What is the ...
Thursday, April 14, 2011 at 7:06pm by mary

Chemistry
2PbCrO4 + HCl + 2FeSO4 ----> PbCl2 + Cr2 (SO4)3 + H2O + Fe2(SO4)3 In the above equation, I have adjusted two of the coefficients. Now, just go through and balanced the oxidation/reduction part. Keep the number of electrons equal. Cr changes from +6 for each atom on the left...
Tuesday, March 10, 2009 at 7:45pm by DrBob222

Chemistry-atoms
A. How many protons are in one atom of fluorine - 19? B. How many neutrons are in one atom of potassium - 39? C. How many electrons are in one neutral atom of V - 51? D. What is the symbol for the element that has 78 protons? E. What is the symbol for the neutral atom that has...
Thursday, April 14, 2011 at 7:43pm by Anne

chemistry
It's a molecule. It consists of three atoms; i.e., 1 atom of C and 2 atoms of oxygen. A single atom would not have a formula of two elements attached to one another. For example, Na is a single atom. Na2O is a compound.
Tuesday, October 12, 2010 at 4:20pm by DrBob222

11th grade
convert 4 × 10−26 kg to grams by multiplying by 1000 (9.5 g of pure uranium)(1 atom/___g uranium atom) notice the grams cancel out and all you're left is the unit atom
Thursday, September 30, 2010 at 9:13pm by TutorCat

chemistry help
Determine the number of moles of each specified atom or ion in the given samples of the following compunds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.) a. O atom in 3.161x10^21 molecules of CO2 b. C atom in 3.161x10^21 molecules ...
Sunday, March 8, 2009 at 7:07pm by jaz

CHEMISTRY
PLEASE HELP I REALLY DO NOT UNDERSTAND THIS YOU DONT REALLY HAVE TO ANSWER THE QUESTIONS BUT AT LEAST JSUT A LITTLE HINT THATS ALL PLEASE AND I HAVE A QUIZ ON THIS TOMORROW MY TEACHER REALLY CANNOT TEACH 1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist in...
Wednesday, November 14, 2007 at 9:12pm by Anonymous

Science-Periodic Table
whats the connection/relationship between the # of protons in the nucleus of an atom & and atomic # of the element? The atomic number tells you the number of protons in the nucleus of the atom. The atomic number is the number of protons in the nucleus of an atom. The number of...
Thursday, April 8, 2010 at 8:18pm by Sara

chemistry
Can you not find this in your text or in your notes? An ionic bond is formed when electrons are transferred from one atom to another making the atom that lost electrons positively charged and the atom that gained electrons negatively charged.
Monday, February 8, 2010 at 7:29pm by DrBob222

Science
It was I that gave you the last response. Please go back and look at what I wrote. You are confusing yourself. Your question was, "How are valence electrons involved in the formation of a covalent bond?" My response was that they (the electrons) were shared with another atom. ...
Sunday, January 13, 2008 at 11:19pm by DrBob222

chemistry
The radius of an atom is about 10,000 times as large as its nucleus. If the atom were enlarged such that the radius of its nucleus was 1 inch, what would be the radius of the atom in meters? I need the formula to follow so that I can solve this problem.
Thursday, December 1, 2011 at 12:45am by george

chemistry
1state relative mass and charge of an electron 2 an atom of an element X may be written as 4X^9 (a)What does the figure 9 indicate? (b)what is the number of protons in an atom X? (c)what is the number of electrons in an atoms X? (d)what does the number 4 indicate? 3 describe ...
Friday, May 4, 2012 at 4:13am by pooja

CHEM
Although we often write HClO as the formula for hypochlorous acid (I know I do that), I agree with xX_Supaman_xX that HOCl is the proper way with O being the central atom. A rule to help with this is worth remembering. USUALLY, the least electronegative element (in this case O...
Saturday, November 10, 2007 at 12:47am by DrBob222

science
When was the idea of the atom first introduced? wasnt it around 450 B.C.. Some claim Demotricus introduced it, as the "atomos", but I am not certain on reading his works he understood it as the thing we know as the atom. The best dating we can do is that Leucippus in 420 BC ...
Saturday, March 31, 2007 at 9:56am by pop

science
A uranium and iron atom reside a distance R = 28.70 nm apart. The uranium atom is singly ionized; the iron atom is doubly ionized. Calculate the distance r from the uranium atom necessary for an electron to reside in equilibrium. Ignore the insignificant gravitational ...
Tuesday, February 19, 2013 at 9:43pm by Kels

science
A uranium and iron atom reside a distance R = 28.70 nm apart. The uranium atom is singly ionized; the iron atom is doubly ionized. Calculate the distance r from the uranium atom necessary for an electron to reside in equilibrium. Ignore the insignificant gravitational ...
Tuesday, February 19, 2013 at 10:11pm by Kels

chemistry
1. name the three fundamental particles present in an atom? mention the masses of the particles in M.K.S. system? 2.what is a proton? stste its relative mass and charge? 3.how many times a proton is heavier than an electron? 4.what important information are furnished about the...
Friday, May 4, 2012 at 9:35pm by pooja

Physics
Charged particles such as ions can separate the charges inside of overall electrically neutral atoms, thus making an electric dipole. A dipole is characterized with a dipole moment p=αEexternal, where α is the polarizability of an atom, and Eexternal is the external ...
Monday, July 1, 2013 at 12:14pm by Mary

Chemistry
An atom, usually a metal, loses electrons and another atom, usually a non-metal, captures that/those electron(s). The atom losing an electron becomes + charged; the atom gaining electrons becomes - charged. The attraction of + ions to - ions is the ionic bond and that's what ...
Wednesday, December 3, 2008 at 3:56pm by DrBob222

PHYSICS- Laws of Motion
During the collision between electron and atom, the electron exerts a force on the atom and the atom exerts an equal and opposite force on the electron. That is Newton's third law. The rest of the problem is about the energy required to free a bound electron from its orbit ...
Wednesday, January 13, 2010 at 2:24pm by Damon

Chemistry
Atom A- 6 protons, 6 electrons, 7 neutrons Atom D- 6 protons, 6 electrons, 8 neutrons Atom X- 7 protons, 7 electrons, 8 neutrons Atom Z- 8 protons, 8 electrons, 9 neutrons Which two atoms are isotopes of the same element? a. A and D b. A and Z c. X and D d. X and Z How am I ...
Saturday, October 16, 2010 at 4:47pm by timmy123

physics
An ionized helium atom has a mass of 6.6*10^-27kg and a speed of 4.4*10^5 m/s. The atom moves perpendicular to a 0.75-T magnetic field on a circular path of radius 0.012m. Determine whether the charge of the ionized helium atom is +e or +2e. Can anyone please give me some ...
Tuesday, April 1, 2008 at 2:52pm by Kelly

physics
The electron in a hydrogen atom with an energy of -0.544 eV is in a subshell with 18 states. What is the principal quantum number, n, for this atom? What is the maximum possible orbital angular momentum this atom can have? Is the number of states in the subshell with the next ...
Thursday, April 12, 2012 at 10:57pm by jazz

chemistry
In the ionic bond between Na and Cl the electron from Na atom is transferred to the cl atom, making the Na atom a Na + ion and the Cl atom a - Cl ion. In the N-Cl bond the electrons are shared.
Thursday, October 11, 2012 at 10:51pm by DrBob222

Chemistry
I can't draw an example on this forum_search_20140419 but you can tell by counting the electrons as they are introduced to the atom in question, in this case Br. Consider PF5. Count the valence electrons in P and F. P = 1 atom x 5e = 5electrons F = 5 atoms x 7e each = 35 ...
Monday, August 6, 2012 at 10:21am by DrBob222

physics
Thanks for the answer. I ask If one proton and one neutron are added to the nucleus of a nitrogen atom, which atom will the new nucleus look like? And you gave me the answer: The new atom would be oxygen, isotope 16. Could you please explain to me how.
Saturday, March 3, 2012 at 5:43am by Anonymous

chemistry
what does an atom of lead look like? what are the parts that compose of the atom? help me pls
Monday, September 3, 2007 at 4:22pm by chemistry

Physical Science
If an atom were to lose a neutron the atom's ________ would be affected.
Tuesday, May 3, 2011 at 10:43am by Dewight Johnson

chemistry
ratio of lone pair on surrounding atom to central atom in Xeo2F2?
Thursday, May 5, 2011 at 6:27am by Mukund

Chemistry
Draw a simple model of an atom to show the position of each of the comstituents of the atom.
Wednesday, November 30, 2011 at 2:34am by Shamsuddeen

Chemistry
A helium atom has a smaller atomic radius than the hydrogen atom. Explain why.
Thursday, November 21, 2013 at 12:37am by tstephens

chemistry.
Deduce the number of each sub-atom particle in an atom of 84Kr?.
Saturday, September 19, 2009 at 2:33pm by Cool boy.

science
NaCl one sodium atom per chlorine atom
Thursday, August 25, 2011 at 12:27am by drwls

science
A hydrogen atom has one proton, two neutrons, and no electrons. Is this atom an ion?
Sunday, March 9, 2014 at 4:50pm by anon

science
Valency is the combining capacity of an element. It is the number of electrons in an atom that actually take part in bond formation. For example, carbon atom with an atomic number 6 has 4 valence electrons.K LC6 2 4 Carbon atom is capable of forming 4 bonds. Hence its valency ...
Friday, May 17, 2013 at 11:30am by nikki

chemistry
consider a neutral atom with 30 protons and 34 neutrons. What is the mass number for the atom?
Monday, June 20, 2011 at 11:30pm by mema

chemistry
consider a neutral atom with 30 protons and 34 neutrons. What is the mass number for the atom?
Tuesday, June 21, 2011 at 11:05pm by mema

chemistry
Consider a neutral atom with 30 protons and 34 neutrons. The mass number for this atom is
Saturday, October 29, 2011 at 2:49pm by Anonymous

chemistry
Consider a neutral atom with 30 protons and 34 neutrons. The mass number for this atom is
Saturday, October 29, 2011 at 2:50pm by Anonymous

Chemistry
The valence electrons either exchange with another atom or are shared with another atom This determines the chemical characteristics.
Friday, November 11, 2011 at 10:04am by DrBob222

Chemistry
The electron configuration of an atom gives the distribution of electrons among atomic orbitals in the atom.
Monday, November 14, 2011 at 4:57pm by Anonymous

chemistry
Yes, but I wouldn't state it exactly that way. The O of one atom is necessary and the H attached to the O of another atom bonds with that.
Thursday, March 1, 2012 at 10:38pm by DrBob222

science
If an atom of X reacts with an atom of X what kind of bond forms?
Monday, May 5, 2008 at 12:07am by Chelsea

ATOM ANDELECTRONS
HOW MANY ELECTRONS SHELL DOES A LITHIUM ATOM HAVE
Wednesday, February 18, 2009 at 11:50pm by YASY

chemistry
when on has lager radus- A sodium atom or siliciom atom.
Thursday, March 31, 2011 at 1:54pm by amm

Chemistry
When an atom is at rest it is said to be in the ground state. All of the electrons are in their "normal" positions; i.e, 2 in the first shell, 8 in the second, etc. When the atom absorbs energy from some source, one of the electrons is moved to an outer unfilled shell (or ...
Tuesday, October 21, 2008 at 7:47pm by DrBob222

chemistry
I wanted to check my True and False Chemistry HW. I am not 100% they are correct. 1.the number of neutrons in an atom is reffered to as its atomic number False 2.the periodic table is arranged by increasing atomic number True 3.atomic number is equal to the number of electrons...
Thursday, November 17, 2011 at 11:49pm by Allura

physics
An atom is normally electrically neutral .Why then should an alpha particle be deflected by the atom under any circumstances?
Wednesday, June 18, 2008 at 4:03pm by aman

phsyical science
what do you think an atom is made up of? what part of the atom caused the particles to bounce back?
Sunday, December 12, 2010 at 7:17pm by darmisha

Chemistry
What does my professor mean by this? Given A, Z for an atom, calculate the number of protons, neutrons and electrons in a neutral atom.
Sunday, October 16, 2011 at 12:21pm by Em

chemisrty
In a neutral atom, the number of electrons ALWAYS is the same as the number of protons. So count up the protons and electrons, subtract, and you have the answer. Atom A has 20 protons and 20 neutrons. Neutral Atom A has 20 protons and 22 electrons. Charge is -2 (actually that ...
Wednesday, November 4, 2009 at 11:23pm by DrBob222

Bio
1. An isotope is an atom of an element that varies in mass number due to variation in the number of: A. atoms. B. protons. C. neutrons. D. electrons. is it C 2, A covalent bond is: A. the attraction that one atom has for another atom. B. the attraction between two atoms, ...
Wednesday, July 10, 2013 at 3:04pm by Amy

physic
Strip electrons from an atom and the atom becomes a
Monday, October 14, 2013 at 11:22am by Anonymous

physic
Strip electrons from an atom and the atom becomes a
Monday, October 14, 2013 at 11:23am by Anonymous

Chemistry
The main reason is that the sodium atom actually loses the electron to become a sodium ion and the chlorine atom gains that electron to become a chloride ion. The electron is moved from one atom to the other. If this explanation needs amplifying, please specify what you don't ...
Tuesday, November 27, 2007 at 9:09pm by DrBob222

chemistry
can someone explain a diatomic molecule, monatomic gas and what would happen if a metal atom bond with a nonmetal atom?
Monday, November 23, 2009 at 8:36pm by patrick

Chemistry
one neutron is added to the nucleus of an atom of Carbon-12. how has the atom been changed? It has a greater atomic mass?
Monday, July 26, 2010 at 12:35pm by Anonymous

Physics
An electron in the c level of a mercury atom returns to the ground state. Which photon energy could not be emitted by the atom during this process?
Thursday, April 25, 2013 at 2:35pm by Shannon

Science ~CHECK MY WORK PLEASE~
A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. From Group 17 ********** B. From Group 1 C. From Group 15 D. A Noble Gas Which is most likely to...
Tuesday, January 28, 2014 at 11:31pm by Jessica

8th grade science
What kinds of ions do a sodium atom and a chlorine atom become when valenc electron is transferred from one to the other?
Monday, November 17, 2008 at 6:51pm by Taylor

Chemistry
An atom emits a photon of light with a wavelength of 566 nanometers. How much energy has the atom lost? Answer in units of Joules.
Wednesday, July 14, 2010 at 1:03am by Ally

grade 9 science chemistry
List three subatomic particles that make up the atom. What charges does each particle have and where in the atom are they located?
Wednesday, December 29, 2010 at 3:41pm by peyton

Chemistry
In our text book, the formula for finding the formal charge of an element in a compound is c(sub f) = X - (Y + Z/2) where x = the number of valence electrons y= the number of unshared electrons owned by the atom z= the number of bonding electrons shared by the atom. would this...
Wednesday, December 6, 2006 at 4:02pm by Alexa

Physics
The main reason is that solids are packed closely, so that vibrations of energy can be transmitted from atom to atom much more efficently than in a gas or liquid.
Tuesday, August 10, 2010 at 11:36am by bobpursley

Science
Thank you for answering but I still have to use both words "ATOM AND ELEMENT" in the explanation. You used only the word ATOM. I will be waiting for your answer.
Wednesday, October 26, 2011 at 9:55pm by Carlos PLEASE HELP ME

physics
Which of the following was explained by the Bohr atom? 1. atomic spectra 2. the fact that most of the mass of an atom is in the nucleus 3. nuclear fission 4. the photoelectric effect
Wednesday, January 22, 2014 at 2:02pm by Andrew

AP Chem
c.) The NO2 -1 ion exhibits resonance, giving bonds of equal length, but in HNO2, the bonding of the H atom fixes one oxygen atom’s bond to N as a single bond. The other oxygen atom is bonded to the nitrogen with a double bond. There is no resonance in HNO2. d) The central ...
Tuesday, January 9, 2007 at 3:36pm by asdfghjk

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next>>

Search
Members