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Atomic Structure
Page 9
Questions (4,407)
I am having some chemistry problems.
3. The graph compares the 1s orbital energies for the F atom (Z = 9), the Ne+ ion (Z = 10),
7 answers
asked by
Morgan
2,883 views
Bromine has two natural occurring isotopes (Br-79 and Br-81) and has an atomic mass of 79.904 amu. The mass of Br-81 is 80.9163
10 answers
asked by
Davis
12,496 views
the mass number is used to calculate the number of-----------in one atom of an element. in order to calculate the number of
4 answers
asked by
jennifer
3,549 views
Element X has two natural isotopes:X-6 (6.015amu) and X-7 (7.016amu). calculate the atomic mass of element X given the abundance
7 answers
asked by
trisha
7,107 views
The electron from a hydrogen atom drops from an excited state into the ground state. When an electron drops into a lower-energy
10 answers
asked by
K
10,073 views
The average atomic mass of nitrogen is 14.01 u.
Nitrogen exists naturally as nitrogen-14 (mass = 14.00 u) and nitrogen-15 (mass =
5 answers
asked by
Selena
2,631 views
how many electrons are in 3.70 x 10^23 atoms of carbon 13?
5 answers
asked by
Emily
2,808 views
How many total atoms are in 0.630 g of P2O5?
4 answers
asked by
Anonymous
1,334 views
Electron Configuration for mo2+
5 answers
asked by
Esther Joseph
5,823 views
What is the longest wavelength of light that can be emitted by a hydrogen atom that has an initial configuration of 8p^1?
Thank
4 answers
asked by
abby
2,452 views
Give the symbol of the element of lowest atomic number whose ground state has:
a) Four f electrons b) a completed d subshell c)
5 answers
asked by
Meg
4,970 views
I am confused on how to even start this problem...
A ground state H atom absorbs a photon of wavelength 94.91 nm, and its
4 answers
asked by
Candace
3,604 views
What mass of rhodium contains as many
atoms as there are zirconium atoms in 23 g of zirconium?
4 answers
asked by
carlee
1,838 views
a sample of glucose, c6h12o6 contains 2.03*10^21 atoms of carbon.
(a)how many atoms of hydrogen does it contain? (b)how many
7 answers
asked by
rose
13,166 views
What is the nuclear charge of an atom with a mass of 23 and an atomic number of 11?
(1) 11+ (2) 12+ (3) 23+ (4) 34+ How do you
4 answers
asked by
Anonymous
3,071 views
Magnesium has three stable isotopes: 24Mg, 25Mg, 26Mg. The relative abundance of 24Mg is 79%.
What are the relative abundances of
7 answers
asked by
Piper
7,153 views
Which statement describes the principal quantum number (n)?
A. The quantum number that indicates the subshell occupied by an
7 answers
asked by
Morgan
3,352 views
The energy levels of one-electron ions are given by the equation:
En=(-2.18*10^(-18)J)(Z^2/n^2) The series in the He spectrum
6 answers
asked by
Anonymous
5,692 views
Determine which ions have noble-gas configurations:
Cd2+ Ru3+ P3− As3− Ag+ Zr4+ Thanks for any help. (I tried As3- and Zr4+,
4 answers
asked by
G-Dogg
5,367 views
Why does it take more energy to remove a electron from Al+ than from Al?
4 answers
asked by
AG
3,346 views
Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems.
Calculate Zeff for a valence electron
5 answers
asked by
Robert
1,701 views
Determine the mass in grams of 2.56*10^24 atoms in Li
4 answers
asked by
Aundrea
1,705 views
How many atoms of silver are there in 2.639g of Ag2O?
4 answers
asked by
Anonymous
848 views
How would the dx2−y2 orbital in the n=5 shell compare to the dx2−y2 orbital in the n=3 subshell?
True or False 1.The contour
9 answers
asked by
Kristine
21,899 views
In part B of my question, I was asked calculate the number of atoms in 0.615 mol of 13C (mass number of this Carbon is 13).
I
7 answers
asked by
Kevin
7,059 views
6. What is wrong with the following electron configurations for atoms in their ground states?
a) 1s^2 2s^2 3s^1 b) (Ne) 2s^2 2p^3
4 answers
asked by
tra
5,736 views
Platinum has a face-centered cubic crystal structure and a density of 21.5 g/cm3. What is the radius of the platinum atom?
5 answers
asked by
Fred
6,272 views
How many valence electrons does each of the following species contain?
BN = HF = OH[1-] = CN[1-] =
5 answers
asked by
IRA
1,761 views
Suppose that a device is using a 5.00-mg sample of silicon that is doped with 1 × 10-5% (by mass) phosphorus. How many
5 answers
asked by
Angel
3,267 views
how many protons and nuetrons are contained in the nucleus of each of the following atoms? assuming each atom is uncharged, how
4 answers
asked by
Corey
3,608 views
Number of electron in As3+ ion?
4 answers
asked by
ayesha
2,714 views
Which is the more stable electron: that in a ground-state H atom or that in a
ground-state He+ ion? Explain your choice.
4 answers
asked by
ben10
1,417 views
A sodium atom when excited gives off two very specific wavelengths of visible light. What does this tell us about sodium?
A.
9 answers
asked by
Morgan
3,087 views
How many electrons does hydrogen need in order to have a full shell of valence electrons?
5 answers
asked by
Adam
376 views
What is the set of quantum numbers for the last three electrons in an iodine atom?
4 answers
asked by
Oobleck plz help
1,950 views
Calculate the number of carbon atoms in
0.75 L of acetone (CH3COCH3). (density = 1.3 g/mL and boiling point = 48.5 degrees
4 answers
asked by
Bob
4,026 views
Did I answer these correctly?
1. What is the total number of principal energy levels or shells in an atom with an atomic number
5 answers
asked by
timmy123
4,881 views
Given that the first and second electron affinities of sulfur are −0.332 aJ and +0.980 aJ, the ionic radii of Zn2+ and S2−
3 answers
asked by
Donovan
405 views
Explain the first ionization energy of lithium is greater than that of sodium
5 answers
asked by
donald
4,220 views
It takes 476 kJ to remove 1 mole of electrons from the atoms at the surface of a solid metal. how much energy (in kJ) does it
4 answers
asked by
Anonymous
2,573 views
A selenium atom (Se) would form its most
stable ion by the 1. loss of 2 electrons. 2. gain of 1 electron. 3. loss of 1 electron.
7 answers
asked by
Randy
12,956 views
Why is there a decrease in electron affinity going from lithium to sodium?
A. There is a stronger nuclear charge, with no
5 answers
asked by
Morgan
2,769 views
On another planet, the isotopes of titanium have the following natural abundances.
Isotope 46Ti Abundance 70.900% Mass(amu)
11 answers
asked by
Anon
13,836 views
One mole of titanium (6 1023 atoms) has a mass of 48 grams, and its density is 4.54 grams per cubic centimeter, so the
4 answers
asked by
hannah
4,548 views
Rank thefollowing elements in order of decreasing atomic radius. N, B, Be, Li?
I thought it was N, B, Be, Li
4 answers
asked by
Anna
2,389 views
calculate the number of protons, neutrons, and electrons in the sample of scandium that you weighed at 7.9 mass weight if it is
4 answers
asked by
GKMB
3,901 views
For an atom of sulfur, which electron would require the least amount of energy to remove from the atom?
A. 3s2 B. 1s1 C. 3p1 D.
5 answers
asked by
Morgan
2,283 views
It is found that 1.431 g of element X contains 7.509 × 1021 atoms. The atomic mass of X is?
5 answers
asked by
MIKE
2,276 views
how many atoms of C are in 2 moles of sucrose C12H22O11?
please help
4 answers
asked by
suzie
1,827 views
How is the atomic structure of a Copper differ from Germanium, Silicon and Gallium Arsenide ?
Tnx :))
5 answers
asked by
Anne
5,618 views
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