Indicate the number of unpaired electrons present in Kr Atom...?

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College Chemistry

Indicate the number of unpaired electrons present in Kr Atom...?

Chemistry (Check)

Q: Number of unpaired electrons in the nitrogen atom. A: 1s^2 2s^2 2p^6. 3 unpaired electrons in the p orbital Q: Number of 4d orbitals. A: 10 Q: Maximum number of electrons that can have n=3 and l=1. A: 1s^2 2s^2 2p^6 3s^2 3p^6. 2 electrons

Chemistry

A neutral atom of an element has 2 electrons with n=1, 8 electrons with n=2, and 5 electrons with n=3. Write its electron configuration and find: A) atomic number B) total number of s electrons C) total number p electrons D) total number of protons E)Paired electrons F)...

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 ...

Chemistry

40 Ca2+ 20 79 Br- 35 58 Ni2+ 28 For the three ions written above give the correct number of each of the following: a) the maximum number of electrons in the first shell b)the unpaired electrons in an oxygen atom c)the full orbitals in a chlorine atom d)the number of types of f...

Chemisty

Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p3. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D. How many valence ...

Chemisrty

Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D. How many valence ...

Chem help

Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D. How many valence ...

Chemistry

You write the electron structure like this. 1s2 2s2 2p6 3s2 3p6 3d10 4s1 is the neutral Cu atom. Remove the two outside electrons to make the Cu^+2 ion. That leaves us with 3d9 as the outside and since that is an odd number, one electron must be unpaired. And you will note ...

Chemistry(Please check)

1)For an atom of carbon how many valence electrons are "s" electrons? 2 2) How many are "p" electrons? 4 3)How many (total) electrons in carbon are paired? 2 4) How many are unpaired? 1 Are these correct.

Chemistry

Which statement concerning the electrons surrounding the nucleus of an atom is NOT correct? a) When 2 electrons pair together, they have opposite spins. b) The number of the electrons in an isolated neural atom is equal to the atomic number c) The second main energy level can ...

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...

Chemistry

For a Sc atom in ground electronic state: 1. how many electrons are there in 4s orbitals? 2. how many electrons are there in 3d orbitals? 3. how many electrons are there in 4p orbitals? 4. how many unpaired electrons are there? 5. to what block does Sc belong to in the ...

chemistry

The number of unpaired electrons and the element for [Xe]6s24f145d7: I know the element is Iridium but I cannot figure out the unpaired electrons!

Chemistry

1) The letter "p" in the symbol 4p^3 indicates the ___. A) spin of an electron B) orbital shape*** C) principal energy level D) speed of an electron 2) If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital? A) Zero B) ...

Chem

From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 X lo7) times greater than the wavelength corresponding to the energy difference between a particular excited state of the ...

chemistry

1.what is meant by atomic number of an element? 2.the mass number of an element is 18,it contains 7 electrons.what is the number of protons and neutrons in it?what is the atomic number of the element? 3.an element has an atomic number of 11 and its mass number is 23?what is ...

chemistry

the cobalt atom has how many unpaired electrons in its ground state? 2 4 1 0 3

chemistry

3a.How many electrons are predicted to be in the 4p orbital of a bromine (Br) atom? 5 b.How many of these electrons are predicted to be unpaired? 5

physics

(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 8.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the negative charge has the very large value 2.00 mC...

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...

chemistry

how do you determine if the atom is a neutral atom or an ion and if the atom is an isotope or not? It is neutral if the number of protons in the nucleus = the number of electrons in the outside shells. More or fewer electrons means it is an ion. An isotope is differentiated by...

Chem

Give the number of unpaired electrons present in a ground-state atom of Tl. I got 5, which isn't right. ndicate which species in each pair has the higher ionization energy. Choose at least one answer. a. Between K and I, I b. Between K and I, K c. Between Al and Al+, Al d. ...

chemmmm

How many unpaired electrons are present in each of these species? (a) 1s22s23p1 ground-state

Chemistry

According to Hund's rule,electrons occupy equal energy orbitals so that a maximum number of UNPAIRED electrons results. True or False

chemistry

how many unpaired electrons are in this complex? Ni(en)2(CN)2 where en is the neutral ethylenediamine and CN is cyanide as the counter ion, I want to say there are no unpaired e- but I'd like a check

Chemistry

In the ground-state electron configuration of Fe^{3+}, how many unpaired electrons are present? An explanation would be great, thanks.

Science

Which electrons in an atom take the most energy, and what are they called? What Kind of diagram is used to show how many of these electrons an atom has? What name is given to the elements with eight outer electrons? Which element belongs to this group, although it has only two...

Science!

Which is most likely to be part of an ionic bond? A. An atom with no valence electrons B. An atom with one valence electron C. An atom with two valence electrons D. An atom with three valence electrons Is the answer B?

Science

Which is most likely to be part of an ionic bond? A. An atom with no valence electrons B. An atom with one valence electron C. An atom with two valence electrons D. An atom with three valence electrons I think it is B.

Chemistry

1) What is the atomic # for selenium? 34 2) Write the full electron configuration for selenium following the (n+l) rule? I am not sure what is meant by n+l 3) write the electron configuration, grouping electrons by their "n" values. [Ar]3d10 4s2 4p4 Are these correct? 4) What ...

Science

1. Consider a neutral atom that has 17 electrons A.) how many protons does it have b.) what is it's atomic number c.)which element is it 2. List the following for an atom with 33 protons and 42 neutrons a.) the name of the element b.) the atomic number C.)the number of ...

Chemistry question!

Please help! What do both an atom and an ion of the isotope of sodium, Na, contain? a) 11 electrons b) 12 neutrons c) 23 protons d) 23 neutrons I really don't get the question. Ok, firstly, choice c and d are out, because it is the RMM of Na that is 23, not the number of ...

chem

in the ground state electron configuration of Fe3+, how many unpaired electrons are present? I thought it was 1, but im getting a wrong answer.

chem

Write the condensed electron configurations for the following atoms and indicate how many unpaired electrons each has. for Ca and Y for Ca i got [Ar] 4s2 but it got cuonted wrong

chemistry

1 the mass of one mole of electron is ...... mg. 2 copper(I) ions contains .......... electrons in its 3rd orbitals 3 if both K and L shells of an atom are full,what is the total number of electrons contained in them? 4 what is maximum number of electrons which can be ...

Chemistry

Check answers? 1) Why did J.J. Thomson reason that electrons must be a part of the atoms of all elements? A) Cathode rays are negatively charged particles**** B) Cathode rays can be deflected by magnets C) An electron is 2000 times lighter than a hydrogen atom D) Charge-to-...

MS. SUE HELP- Chemistry

Check answers? 1) Why did J.J. Thomson reason that electrons must be a part of the atoms of all elements? A) Cathode rays are negatively charged particles**** B) Cathode rays can be deflected by magnets C) An electron is 2000 times lighter than a hydrogen atom D) Charge-to-...

Chemistry

The sizes and shapes of the hydrogen atom orbitals was revealed through graphical analysis of the corresponding wave functions. These wave functions also predict areas that the electrons have a zero probability of being found. These areas are known as nodes. Nodes in the ...

Electrochemistry

A current of 2.50 A is passed through a solution containing Cu+2 ions for 4.00 hours. Calculate the mass of Cu atoms that form at the cathode. Charge= current*time Convert the charge in coulombs to number of electrons. Since it takes two electrons per Cu+2 atom, divide the ...

Chemistry

How can you find out how many unpaired electrons are present in gaseous Co3+ ion in its ground state? According to the NBS Circular 467 "Atomic Energy Leves", Co(3+) has 24 electrons with structure 1s(2), 2s(2), 2p(6),3s(2), 3p(6), 3d(6), and spectroscopic designation 5D4. (...

chm

1. What does the term electronegativity mean? Answer the tendency for an atom to pull electron density toward itself the number of positive charges in the nucleus minus the number of electrons around it an atom's ability to form bonds with oxygen atoms my answer>> the ...

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 ...

Chemistry

24. A quantum is a finite amount of energy gained or lost by an atom.- F? 25. An atom is in an excited state when it has its lowest energy.- F 26. The Bohr model of the atom shows electrons in areas called energy levels.- F? 27. The principal quantum number indicates the main ...

8th grd chemistry:D

which of these statements is true about an atom of chromium? (A) has more protons then electrons. (B) has fewer parts than an atom of iron. (C) has an atomic number of 51.996. (D) has more electrons than neutrons.

chemistry

using only the periodic table, write the expected ground-state electron configurations for: a. element number 116 b. an element with three unpaired 5d electrons c. the halogen with electrons in the 6p atomic orbitals

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...

Science-Periodic Table

describ how to verify the number of electrons in the atom of an element. You look at the atomic number which is the number of protons. The number of protons equals the number of electrons. please correct me if I'm wrong, thanks

chemistry

Can someone please explain this question to me, i am not sure if i am right but i think the answer is 2? How many of the following elements have 2 unpaired electrons in the ground state? how many of the following elements have 2 unpaired electrons in the ground state? C, O, Ti...

chemistry

Calculate the maximum number of unpaired electrons that can be placed in a 6d subshell

Science

The maximum number of electrons in the second energy level of an atom is ____. two four eight ten The number of _____ is equal to the atomic number. protons neutrons electrons both a and c

chemistry

give the total number of protons and electrons in each atom Cr2+ 24 protons 22 electrons Cr3+ 24 protons 21 electrons Ni3+ 28 protons 25 electrons Ni4+ 28 protons 24 electrons

chemistry

A sodium atom when excited gives off two very specific wavelengths of visible light. What does this tell us about sodium? A. There are two principal electron transitions in sodium. B. There are two electrons in a sodium atom. C. A sodium atom has its electrons in two energy ...

physics!

A copper wire 81.9 cm long and 1.10 mm in diameter has a mass of 6.43 g. (a) Find the number of electrons in the wire. (Copper has an atomic number of 29; that is, there are 29 protons in the Copper atom. Copper's atomic mass is 63.5.) how many electrons: (b) There is one free...

physics

A copper wire 81.9 cm long and 1.10 mm in diameter has a mass of 6.43 g. (a) Find the number of electrons in the wire. (Copper has an atomic number of 29; that is, there are 29 protons in the Copper atom. Copper's atomic mass is 63.5.) how many electrons: (b) There is one free...

Science

Different elements have different kinds of atoms. How can you tell an atom of one element from an atom of another? A. the number of electrons B. the number of neutrons C. the number of nuclei D. the number of protons

Science

Different elements have different kinds of atoms. How can you tell an atom of one element from an atom of another? A. the number of electrons B. the number of neutrons C. the number of nuclei D. the number of protons

Science Help!

When two hydrogen atoms bond with one oxygen atom to form water, what happens to the electrons? A. Each hydrogen atom donates its electron to the oxygen atom B. The oxygen atom donates an electron to each hydrigen atom C. A pair of electrons is shared at each of the hydrogen-...

science

the question says assume the valencies of hydrogen, nitrogen and carbon in the compounds are 1, 3 and 4 from this i must draw a structural formulae for hydrogen cyanide and cyanogen that are consistant with these valencies. please help H : C::: N: Does that work? thanks but ...

chemistry

A scientist discovers that an atom with a mass number of 14 contains eight electrons. According to the scenario, what is the atom's atomic number? 22 6 8 14 please help

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, ...

Science

When two hydrogen atoms bond with one oxygen atom to form water, what happens to the electrons? A. Each hydrogen atom donates its electron to the oxygen atom. B. The oxygen atom donates an electron to ach hydrogen atom. C. A pair of electrons is shared at each of the hydrogen-...

Science

When two hydrogen atoms bond with one oxygen atom to form water, what happens to the electrons? A. Each hydrogen atom donates its electron to the oxygen atom. B. The oxygen atom donates an electron to ach hydrogen atom. C. A pair of electrons is shared at each of the hydrogen-...

Physical Science

Compare the number of valence electrons an oxygen, O, atom has with the number of valence electrons a selenium, Se, atom has. Are oxygen and selenium in the same period or group?

Physical science

Compare the number of valence electrons an oxygen atom has with the number of valence electrons a selenium atom has. Are oxygen and selenium in the same period or group?

Physical science

Compare the number of valence electrons an oxygen atom has with the number of valence electrons a selenium atom has. Are oxygen and selenium in the same period or group?

chemistry

Which statement correctly describes an atom of the element helium? A. An atom of helium has its valence electrons in it's first energy level. B. An atom of helium most similarly behaves like an atom of hydrogen since it is in the same period. C. An atom of helium has a full ...

Chemistry

In an atom whose core contains 16 neutrons possess a total electrical charge 1. What is the atomic number of the atom? 2.What is the number of nucleons(mass)? 3.How much electrons has in electronic mantle?

Science

compare the number of valence electrons an oxygen, O, atom has with the number of valence electrons a selenium, Se, atom has. are oxygen and selenium in the same period or group?

Chemistry

The complex [Co(ox)3]4- has a high-spin electron configuration. How many unpaired electrons are there in the complex? I know because it's a high-spin, it's tetrahydral shaped. But I don't know what (ox) is so, I'm stuck in finding the oxidation state of Co which helps me find ...

Chemistry

11. Semiconductors (metalloids) have properties of both metals and nonmetals.-T? 13. Covalent bonding occurs when electrons are transferred from one atom to another.- F? 17. Bonding involves all the electrons in an atom.- T? 20. Nonpolar bonds form when electrons are shared ...

Chem Check Please!!!

All of the following statements concerning crystal field theory are true EXCEPT a. in low-spin complexes, electrons are concentrated in the dxy, dyz, and dxz orbitals. b. in an isolated atom or ion, the five d orbitals have identical energy. c. low-spin complexes contain the ...

biology

Picture true of false The atom shown in the diagram has 4 energy levels or shells. 2. The atom shown in the diagram above has a total of 5 electron orbitals. 3. Each energy level consists of 2 or more orbitals. 4. The second energy level consists of 4 electron orbitals. 5. ...

URGENT Chemisrtry

In an atom whose core contains 16 neutrons possess a total electrical charge q=+2,56x10in force -18 1. What is the atomic number of the atom? 2.What is the number of nucleons(mass)? 3.How much electrons has in electronic mantle?

Science

1. Which statement about subatomic particles is NOT true? (1 point) Protons and neutrons have almost the same mass. Protons and electrons have opposite charges. Unlike protons and electrons, neutrons have no charge. Protons and neutrons have the same charge. 2. Which of the ...

science

getting ready to turn this in just want to check my answers any takers?? 1. In an atom, electrons ____. (1 point) are located in the nucleus are paired with neutrons are located in the electron cloud are always in the same place 2. The maximum number of electrons in the second...

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.

Biology

Carbon is a an element with an atomic number of 6. Based on this information, which of the following statements is true? A. Carbon can be broken down into simpler component substances. B. Each carbon atom will always have 6 protons. C. Each carbon atom will always have 6 ...

Chemistry

A tin atom has 50 electrons. Electrons in which sublevel of this atom would experience the lowest effective nuclear charge? a. 1s b. 3p c. 3d d. 4s 3. 5p

HS Science

I have 4 questions 1 What is the equation for the acid ionization constant of HI? 2 Give the oxidation numbers of all atoms in NaMnO4 3 An atom changes its oxidation number from -2 to -5. Is it oxidized or reduced? How many electrons did it take to do this? 4 An atom changes ...

Chemistry

An atom contains a total of 29 electrons. When the atom is in the ground state how many principle energy levels will contain electrons? a: 1 b: 2 c: 3 d: 4 How do you figure this out?

Chemistry

From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 e7) times greater than the wavelength corresponding to the energy difference between a particular excited state of the ...

Pre-AP Science

an atom consists of 10 neutrons ,10 electrons,and 9 protons. The atom has gained an electron resulting in a charge of -1. What is its mass number?

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...

Chemistry-Bonding

Classify the following bonds as ionic, covalent, or neither (O, atomic number 8; F, atomic number 9; Na, atomic number 11; Cl, atomic number 17; U, atomic number 92). a.) O with F _________ b.) Ca with Cl __________ c.) Na with Na _________ d.) U with Cl __________ First, I do...

CHECK answers science

my answer has the **** 1. What is the smallest part of all matter called? (1 point) * a. Element b. Atom***** c. Molecule d. Compound 2. Which of the subatomic particles is negative? (1 point) a. Nucleus b. Neutron c. Proton d. Electron*** 3. Who provided the first evidence ...

Science-Periodic Table

describe how to verify the # of electrons in the ion of an element. Can you please correct some of my wordings in here. I don't really get how to explain it. You look at the atomic number which is the same number of protons as electrons; but if there is a positive ion charge, ...

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.

Check my answers, Physical science

my answer has the **** 1. What is the smallest part of all matter called? (1 point) * a. Element b. Atom***** c. Molecule d. Compound 2. Which of the subatomic particles is negative? (1 point) a. Nucleus b. Neutron c. Proton d. Electron*** 3. Who provided the first evidence ...

SCIENCE HELP ASAP

1. in an atom, electrons_____ 2. dot diagrams are used to represent_______ 3. the maximum number of electrons in the second energy level of an atom is________

Physics

We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 4.9 g. Find the number of atoms in a nickel coin. Each mole (6.02 × 10 23 atoms) has a mass of about 58.1 g. Answer in units of atoms Find the ...

Chemistry

The atomic number of an electrically neutral atom is equal to the number of: Choose all that apply. Neutrons Electrons Protons I chose Electrons but somehow my homework program is telling me it's wrong? I also tried checking all of them.

Chemistry

What is the magnetism of F2+, and how many unpaired electrons does it possess? Would F2+ act the same way as F+? In that case it would be paramagnetic and have 2 electrons.

Chemistry

Noble gases are the least reactive because they have a perfect 8 valence electrons. Or is it because they do not have any unpaired electrons like the rest of the elements.

Chemistry

An electron jumps from energy level 1 to energy level 2 by absorbing a photon of energy 8 eV. What is the most likely energy of the photon that will be emitted by the electron when it moves back down to energy level 1? 2 ev 4 ev 8 ev 12 ev What is the best description of the ...

Physics

We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 5.7 g. a. Find the number of atoms in a nickel coin. Each mole (6.02 × 10^23 atoms) has a mass of about 57.9 g. Answer in units of atoms. b. Find the ...

AP CHEM HELP!

How many unpaired electrons are present in each of these species? (a) 1s22s23p1 1 ground-state= __________ (b) 1s2 2s2 2p6 0 ground-state=______________ I Cant get the ground state config i think there might be somethign wrong...

earth science

If an atom has 17 electrons and its mass number is 35, calculate the following: number of protons, atomic number, and number of neutrons.

physics please please please help me!

A neutral nitrogen atom has 7 electrons, 7 protons, and 7 neutrons. What is its total charge? If we remove 2 of the electrons, now what is its charge? what is its charge if we add 2 electrons to the neutrol atom instead? give charge in Coloumbs.

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 ...

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