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Arrange the elements in decreasing order of first ionization energy

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chemistry
Why do you think that the ionization energy tends to decrease within a family of the periodic table? Since ionization energy tends to increase within a period of the periodic table because they are in higher energy orbitals so it'll take more energy to remove the electrons. It...

CHEMISTRY (ionization energy)
find the ionization energy of I-, I, and I+ I know you have to use E= hc/lambda, and c=lambda x v, but how do i get v?

science
identify the element which is colored, forms a diatomic molecule, is a solid at room temp., is a nonmetal, and has a low ionization energy compared to other elements of the same family. Have you considered iodine?

Chemistry
Predict the answer to each question according to trends in the periodic table. Justify each answer based on the locations of the elements on the periodic table and/or the shell model. a. Which has a greater atomic radius, Al or Cl? b. Which has a greater ionic radius, Na or S...

chemistry
q4 What element has the greatest first ionization energy? Li Na K Rb Cs

Chemistry
Calculate the ionization energy (in kj) for a mole of hydrogen atoms, making the assumption that ionization is the transition from n=1 the correct answer is : 1.31x10^3 kJ

ap chemistry
Arrange the bases I) deuterated ammonia (ND3) Kb = 1.1 × 10−5; II) hydrazine (NH2NH2) Kb = 1.7 × 10−6; III) hydroxylamine (NH2OH) Kb = 1.1 × 10−8; IV) ammonia (NH3) Kb = 1.8 × 10−5; in decreasing order of strengths.

Chemistry
Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy level. Calculate the energy (Joules) ...

**CHEM
Place the following elements in order of Decreasing atomic size: tellurium, bromine, argon, cesium, strontium, and selenium. would the correct ranking then be: Cs, Sr, Te, Se, Br, Ar ??? or am I still way off??

CHEMISTRY
Why do the metallic elements of a given period (horizontal row) typically have much lower ionization energies than do the nonmetallic elements of the same period?

Maths
Change these fractions to twentieths and then arrange them in order of size, smallest first. 7/20 2/5 3/4 7/10

chemistry
Explain the first ionization energy of lithium is greater than that of sodium

Chemistry
Calculate the work done when 70.0g of tin dissolves in excess acid at 3.00 atm and -15.0 C. Sn(s)+2H^+(aq) -> Sn^2+(aq)+H2(g) Assume ideal gas behavior. Any ideas? I've come up with a few different answers and can't come to a conclusion. I see the following energies ...

science
The bonds that holds atoms together in a molecule are a form of a. potential energy b. ionization energy c. kinetic energy d. thermal energy A?

Chemistry
Which of the following atoms would have the highest first ionization energy? A. Li B. Be C. Na D. Mg

Chemistry
1.) The average velocity of Cl(2) molecules is 2.50 x 10^3 m/sec at a temp of 25 C therefore the average velocity of helium atoms is ?? [ i got the answer 5.94 x 10^2 m/Sec is that right] 2.) A gas is allowed to expand from 1.5 : to 12.5 L against a constant pressure of 6.5 ...

Chemistry
These ionization energies (Kj/mol) have been reported for element "Z": first: 500 second: 4560 third: 6910 fourth: 9540 fifth: 13400 Which of the following elements is most likely "Z"? 1. Si 2. Mg 3. Al 4. Na 5. Cl Is it 4. Na ?

Atomic Size
Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur.

chemistry
describe the predominant forces that exist between molecules of the noble gases. Arrange the noble gases in a predicted order of increasing boiling point (lowest first) and explain the reason for the order

Chemistry
1.Arrange the following oxides in the order of increasing basicity. -Al2O3 -B2O3 -CaO -Ga2O3 -In2O3 -RaO 2.Arrange the following oxides in the order of most basic to most acidic. -Al2O3 -Cl2O7 -Cs2O -N2O5 -Na2O -P2O5 -SO3

I don't understand this chemistry problem?
The question reads: Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur. I looked this up on a periodic table and my answer was: Rb, Se, Ca, Cl, F, S. This is still marked wrong, and I don't know why.

Chemistry
Why is the first ionization energy of a nonmetal much higher than that of an alkali metal in its same period?

Chemistry
Which of the following has the higher ionization energy and why: Li or Ba? I cannot figure this out because they are in different periods but Ba is down on the periodic table telling me that it may have a higher ionization than Li. Help please?

physical science
The ionization energies of Li, Na, K, Rb, and Cs are respectively 5.4, 5.1, 4.3, 4.2, and 3.9 eV. All are in Group 1 of the periodic table. Explain the decrease in ionization energy with increasing atomic number in this group.

Chem/ Calculating Lattice Energy, Vapor Pressure
How do you calculate lattice energy? I have to place the following in order of decreasing magnitude of lattice energy, but I don't know how to do it. KF MgS RbI Is there a formula or some simple way of knowing which has the greatest energy? 2. I also have the same question, ...

chemistry
What is the pH ( 3 significant digits) of a 0.01 M solution of sulfuric acid? Hint is that the first ionization constant is "large", and the second is finite, and the [H+] donated by the second equilibrium depends upon the amount of [H+] already donated by the first ionization...

AP Chemistry Born-Haber Cycle?
When using the Born-Haber Cycle for Na2S, do I double the ionization energy of Na since there are two Na ions for every S ion in Na2S? Also, the problem asked me to find the change in energy for S- (g) + e- => S2- (g). Assuming that you do double the ionization energy, I ...

Chemistry
Which of the following elements (C, B, Be, Li for both parts of the question) will have the greatest increase in ionization energy between the removal of the first and second electrons? Which has the largest atomic radius? a. beryllium,boron b. boron, lithium c. beryllium, ...

chemistry
The enthalpy of formation of C2H5OH is -238.7 kJ/mol. What information does this reveal about the bonds in the molecule? A. Bond formation in C2H5OH from its elements only occurs in cold temperatures. B. Bond formation in C2H5OH from its elements does not occur. C. Bond ...

chemistry
For a week acid whose ionization constant is 1.75 x 10(-5), the pH of its solution is 3.0. Determine its degree of ionization and its percent ionization.

Chemistry
Rank the following atoms in order of decreasing electronegativity, putting the most electronegative first: F, Ne, O, N, C

chem
Rank the following species according to the decreasing energy needed to raise the temperature of 10.0g of the substance by 25.0 degrees celsius Rank from most to least energy needed. Rank these in order of the question. copper aluminum cast iron silver water

chemistry
Posted by lyne on Tuesday, March 25, 2008 at 11:44pm. What is the pH ( 3 significant digits) of a 0.01 M solution of sulfuric acid? Hint is that the first ionization constant is "large", and the second is finite, and the [H+] donated by the second equilibrium depends upon the ...

CHEM URGENT
Infrared, ultraviolet, and visible radiation are all part of the electromagnetic spectrum. Arrange the three types of radiation in order of increasing energy.

chemistry
Arrange the following three water solutions according to decreasing osmotic pressure

chemistry
Arrange the three metals in order of their relative strengths as reducing agents, placing the strongest first. Write each metal as a half reaction.

Chemistry130
Can someone please help me with this question? Propose a possible explanation as to why this trend exists. What characteristics of the elements lead to this trend? We are discussing Ionization energy! She's asking for characteristics like subatomic attractions, electron ...

chemistry
1) Arrange the metal-metal ion reactions (aluminum, copper, nickel), M^n+ + ne^- --> M^0, in a column, in order of decreasing ability as oxidizing agents... What I put was : Al^+3 + 3e^- --->Al Ni^+2 + 2e^- --->Ni Cu^+2 + 2e^- --->Cu 2) Also, explain your reasoning...

Chem
Arrange these elements P, Mg, N, Br, K in increasing metallic character

Chemistry
How would the electronegativity and first ionization energy values of lithium compare with the same values of oxygen? Why?

Gen Chemistry
What is the pH ( 3 significant digits) of a 0.01 M solution of sulfuric acid? Hint is that the first ionization constant is "large", and the second is finite, and the [H+] donated by the second equilibrium depends upon the amount of [H+] already donated by the first ionization...

Lauren
Arrange the following in order of increasing ionic radius: I^-, Cs+, and Te^2-. Explain this order

chemistry
The following describes the process of an atom emitting light. Place the steps in order: (I already know the first two steps are: 1. Energy is absorbed by electrons and excitation occurs and 2. Electrons move from the ground state to the excited state.) Electrons are unstable ...

Lauren
Arrange the members of each of the following pairs in order of increasing radius and explain the order: A. Te, Te2- B. Al, Al3-

C++
The variables arr1 and arr2 have been declared as pointers to integers . An array of 10 elements has been allocated, its pointer assigned to arr1, and the elements initialized to some values . Allocate an array of 20 elements , assign its pointer to arr2, copy the 10 elements ...

CHEMISTRY
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the connection ...

CHEMISTRY
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the connection ...

Chemistry
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told to look up lasers, plasma arcs and neon lights. Hours later, (lol) I'm still having a little trouble. Is there any way someone can explain the connection between...

organic chemistry
1. Arrange the following in order of decreasing reactivity toward nitration. Fully explain please I could use some help!! A. acentanilide, b. bromobenzene, C. acetophenone, D. toluene 2. Explain why p-nitrophenol is a stronger acid than phenol itself? Would p-methoxyphenol be ...

Chemistry
What is the enthalpy change (in kJ/mol) for the following process? Na+(g) + Br-(g) --> NaBr (s) Hint: use the Born-Haber cycle Note: the reference state for Br2 is Br2(l) not Br2(g) Data (in kJ/mol): enthalpy of sublimation of Na(s): 107 standard enthalpy of formation of ...

computer science C++
The variables arr1 and arr2 have been declared as pointers to integers. An array of 10 elements has been allocated, its pointer assigned to arr1, and the elements initialized to some values. Allocate an array of 20 elements, assign its pointer to arr2, copy the 10 elements ...

Science
I am a non-metal. I belong to the Halogen family. I am not the largest or smallest atom in my group. My first ionization energy is greater than that of iodine. I am not a gas at room temperature. What element am I?

Chemistry
The relationship between ionization energies as evidence for electron configuration for elements?

chemistry
calculate the lattice energy of sodium oxide (Na2O) from the following data: Ionization energy of Na(g): 495 kJ/mol Electron affinity of O2 for 2e: 603 kJ/mol Energy to vaporize Na(s): 109 kJ/mol O2(g) bond energy: 499 kJ/mol Energy change for the reaction 2Na(s)+ 1/2 O2(g)--&...

Chemistry
The following equations are intepretations of the evidence from the reactions of four metals with various cation solutions. Make a table of half-reactions and arrange the four metallic ions and the hydrogen ions in order of their decreasing tendency to react. Label the ...

science
I am in the p-block of the Periodic Table. My melting point is the highest in my period (ignore tansition metals). I am not the smallest atom in my group. My first ionization energy is greater than that of germanium. What element am I?

chemistry
how do you write the ionization reaction and the acid ionization constant expression for the third ionization of phosphoric acid in water? Can you explain the main concepts that are involved in this?

Chemistry
how does the outer energy level relate to the ionization energy?

physics
Calculate the ionization energy of doubly ionized Lithium, which has Z=3. Construct also the energy level diagram for it.

chemistry
When irradiated with a radiation of wavelength 58.4 nm the electron of H atom was ejected with kinetic energy 7.6 eV. Calculate the ionization energy.

math
in which order do the follownig fractions go in?3/8,2/7,4/9 arrange them this way: 2/7 ; 3/8 ; 4/9 This looks like n/(n+5) at low n, this approacthes zero (n=0) at hign n, it approaches 1 (n/n) So the order listed is from lowest to highest.

Physics
The following values are the only allowable energy levels of a hypothetical one-electron atom: E6 = =2 X 10^-19 J E5 = -7 X 10^-19 J E4 = -11 X 10^-19 J E3 = -15 X 10^-19 J E2 = -17 X 10^-19 J E1 = -20 X 10^-19 J A) If the electron were in the n = 3 level, what would be the ...

Chem
Arrange the different types of forces in order of increasing energy. Covelant, Hydrogen bonding, Ion Dipole, Dipole-Dipole, Induced Dipole, and Ionic Bonding

Chemistry
Calulate the degree of ionization for NH3(aq) in 1.0 M solution, Kb = 3.236E-4. I've seen degree ionization for acids and not bases. Do I need to find the Ka [H+] value of the base to determine the degree of ionization?

Chemistry
Suppose you are given the following experimentally observed facts regarding the reactions of silver ion. (a) Ag^+ reacts with Cl^- to give white AgCl (s) (b) Ag^+ reacts with ammonia to give a quite stable complex ion, Ag(NH3)2^+ (c) a black suspension of solid silver oxide, ...

chemistry
the following values are the only energy levels of a hypothetical one electron atom: E6= -2x10^-19J, E4= -11x10^-19J, E2= -17x10^-19J, E5= -7x10^-19L, E3= -15x10^-19J, E1= -20x10^-1J a: if the electon were in the n = 3 level, what would be the highest frequency and minimum ...

chemistry
Can someone help me with this homework problem? Which of the following is the best explanation as to why lithium is the strongest reducing agent in the alkali metals? A) relatively high charge density of Li B) lowest ionization energy of the metals C) most positive standard ...

Chemistry
What amount of energy is required to completely ionize 21.5 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J

chemistry
Changing 1 mol of Mg(s) and 1/2 mol of O2 (g) to gaseous atoms requires a total of approximately 150kJ of energy. The first and second ionization energies of Mg are 737kJ/mol and 1450kJ/mol respectively. The first and second electron affinities of Oxygen are -141KJ/mol and +...

chemistry
The first ionization energy, E, of a boron atom is 1.33 aJ. What is the wavelength of light, in nm, that is just sufficient to ionize a boron atom? Values for constants can be found here.

ap chemistry
What amount of energy is required to com- pletely ionize 26.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J

CHEM AP please help!!
Why does the octet rule not hold for many compounds containing elements in the third row of the periodic table and beyond? (Select all that apply.) 1. Atoms of elements in the third period are less subject to destabilization from additional electron-electron repulsions. 2. ...

Organic Chem
Rank these conformational isomers in order of decreasing potential energy? Highest on the left and lowest on the right. To rank items as equivalent, overlap them. Here is a link to the picture of the problem: ht+tp+:/+/bit+.ly/+8ZHeDA Remove the '+' sign

Chemistry
I need help with this in order to correctly complete my other related problems. Thank you so much in advance =) Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN, NaOH, NH3, NaCN, KNO3, ...

Chemistry
I need help with this in order to correctly complete my other related problems. Thank you so much in advance =) Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN, NaOH, NH3, NaCN, KNO3, ...

chemistry
What is the maximum number of Cs+ ions that can be produced per joule of energy absorbed by a sample of gaseous Cs atoms? Do you start by knowing the ionization energy for Cs. I really need assistance.

science
An electron is moving in one dimension (x)subject to the periodic boundary conditions that the wave function reproduces itself after a length L(L is large_ a)add a perturbation V(x)=ecos qx where qL=2piN (N is large integer) recalculate the energy levels and stationary states ...

chem
The noble has configuration for Ta is [Xe] 6s2 4f14 5d3 does the order in which i arrange the principle energy levels matter when i write the configuration? Like should it be [Xe] 5d3 6s2 4f14

chemistry
Infrared, ultraviolet, and visible radiation are all part of the electromagnetic spectrum. Arrange the three types of radiation in order of increasing energy? i put visible<infrared<ultraviolet. Is this correct though

chem
what are 6 elemts that make up Yellow Gold? What are 6 elements that make up White Gold? What are 5 elements for platinum for gemstone settings? what are 2 elements that make up palladium for gemstone settings? what is 1 element that makes up a diamond? 3 elements that make up...

geometry
List the following elements in proper set notation. Place the elements in numerical order within the set. * 0 * 1 * 123 * 4 * 34

geometry
List the following elements in proper set notation. Place the elements in numerical order within the set. * 0 * 1 * 123 * 4 * 34

geometry
how do you do list the following elements in proper set notation. Place the elements in numerical order within the set. *0*123*4*34* 1

chemistry help?!
Which statement correctly pairs the order of a reaction with the units for the rate constant? A. third order; s/M B. zero order; 1/(M2) C. second order; 1/(M•s) D. first order; 1/M

chemistry
Determine the overall orders of the reactions to which the following rate laws apply: a. rate = k[NO2]^2 b. rate = k c. rate = k[H2][Br2]^1/2 d. rate = k[NO]^2[O2] I think the answers are: a. Second Order b. Zero Order c. First Order for H2 and One-half order for Br2 d. Second...

math
arrange in descending order: 4/5, 6/20, 8/24 and 5/8.

Mathematics
Arrange 6/8 ; 1/6 ; 3/3 in increasing order

Math
Arrange 1/8,1/4,1/5,1/2,1/3,1/9 in ascending order.

Chemistry
Arrange the different types of forces in order of increasing energy. Covalent, Hydrogen Bonding, Ion-Dipole, Dipole-Dipole, Induced Dipole-Dipole (induced and London dispersion), and Ionic Bonding

Chemistry
Consider an ionic compound, MX2, composed of generic metal M and generic halogen X. The enthalphy of formation of MX2= -891. The enthalphy of sublimation of M= 141. The first and second ionization energies of M are 605 and 1392. The electron affinity of X= -339. The bond ...

chem
Section: Ionization expressions, Weak Bases Using the equilibrium constants listed in your book, arrange the following .1 M aqueous solutions in order of increasing pH. a)NaNO2 b)HCl c)NaF d)Zn(H2O)3(OH)(NO3) Here's what I have so far: a) NaNO2 --> Na+ + NO2- NO2- + H2O <...

chemistry
The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or 8.25*10^-11 M. ...

chemistry
The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or 8.25*10^-11 M. ...

biology12 HELP ASAP TEST TOM
For each given word start with the wor and put the rest in order appropriately> RIBOSOME----> golgi complex, vesicale food to be digested, rough er, lysosome put in order MITOCHONDRIAN---> muscles use energy, energy made , carboydrate and oxygen sunlight---> ...

Abstract Algebra
If G is a group with exactly 66 elements of order 14, how many subgroups of order 14 does G have?

physics
Two small stereo speakers A and B that are 1.40m apart are sending out sound of wavelength 33.5cm in all directions and all in phase. A person at point P starts out equidistant from both speakers and walks (see the figure (Figure 1) ) so that he is always 1.50m from speaker B...

Math-Calculus (check please)
FOr the function f(x)=x^2e^x Find the critical points, increasing decreasing, first and second derivative and concavity I am having trouble finding the concavity >_< First derivative: xe^x(x+2) Second : e^x(x^2+4x+2) Critical points from first derivate: x=0,-2 Increasing...

science
I am a main group element. I have 3 p-orbital electrons in my valence shell. I have a lower first ionization energy than arsenic. I am not the largest atom in my group. What element am I?

Chemistry
What is the lattice energy of NaH? Use the given information below: Heat of formation for NaH = -56.442 kJ/mol Head of sublimation for Na = 107.3 kJ/mol Ionization energy for Na = 496.00 kJ/mol Bond dissociation energy for H2 = 435.9kJ/mol Electron affinity of H = -72.8

Chemistry
What is the lattice energy of NaH? Use the given information below: Heat of formation for NaH = -56.442 kJ/mol Head of sublimation for Na = 107.3 kJ/mol Ionization energy for Na = 496.00 kJ/mol Bond dissociation energy for H2 = 435.9kJ/mol Electron affinity of H = -72.8

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