Name______
Honors Chemistry I
Electron Configuration /
EM Radiation Practice Test
1.___B_____Salts of which of these metals produce a lavendar or violet flame, in a flame test?
A) Na; B) K; C) Cu; D) Sr; E) Li; F) Co; G) Mn
2.___C_____ In a chemical reaction the removal or movement of what type of electron is associated with the visible range color of the salts of transition metals?
A) s orbtial; B) p orbital; C) d orbital; D) f orbital.
3.____3____1____0____-1/2__ What is the set of quantum numbers for the 17th electron in a neutral atom of
n l m s radon in its ground state?
4.___A____Which of the following subshells contains electrons of the highest energy?
A) 7s; B) 4f; C) 5d; D) 1s; E) 6p
5.___Cd____What is the symbol for the element that has the following set of quantum numbers for its highest energy electron in the ground state: n = 4 l = 2 m = +2 s = -1/2
6._____345 nm______What is the wavelength for a photon (in nm) if it has a frequency
of 8.70 x 1014 sec-1?
3.00 x 108 = λ(8.70 x 1014)λ = 3.45 x 10-7 m = 345 nm
7.______UV______What type of EM radiation is described in the problem above?
8._____5.77 x 10-19 J______What is the energy (in joules) associated with this photon?
E = (6.63 x 10-34)(8.70 x 1014) E = 5.77 x 10-19 J
9._____1.4 kJ______How many kilojoules of energy would be associated with 0.040 moles of the photons described in #8?
5.77 x 10-19J/photon x (6.022 x 1023/1 mol)*.040 mol = 13899 J = 1.4 kJ
10.____-6.06 x 10-20 J______Calculate the energy associated with the sixth shell.
En = - 2.18 x 10-18J(1/62) E = -6.06 x 10-20 J
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Consider this complete electron configuration for the following neutral element:
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d8
11.___5d8______What is the highest energy subshell in this element?
12.___Pt______What is the chemical symbol for the element being described?
13.___14_____What is the total number of subshells within this element?
14.___B_____What is the classification of this element?
A) alkali metal; B) transition metal; C) alkaline earth metal; D) chalcogen;
E) halogen; F) inner transition metal; G) noble gas
15. T - F Based on the electron arrangement, this element would be paramagnetic.
16. T - F Based on the Z number , this element would be radioactive.
17.____5___2____0___-1/2_____ What is the set of quantum numbers for the highest energy electron in a
n l m s neutral atom of this element?
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18._Sn_____What element is it whose neutral, isolated atom has two valence electrons in the 5s subshell, and twohalf-filled orbitals in the 5p subshell (in addition to its core electrons)?
19.__7____How many shells are either filled or partially filled in a neutral atom of nobelium?
20.___G_____ Which of the following is/are a valid set of quantum numbers for any one of the electrons in a ground state configuration of a neutral atom of cerium?
n l m s n l m s
A) 3 2 -1 -1/2B) 5 0 0 +1/2
C) 5 3 -2 -1/2D) 3 3 -1 +1/2
E) 1 1 +1 -1/2F) 5 1 -2 +1/2
G) both A and B; H) both C and D; I) both A and C; J) both B and C.
A = 3d, B= 5s, C = 5f, D = 3f doesn't exist, E = 1p doesn't exist, F = m is out of range
21._____[Kr]4d10 5s2 5p1______Give the electron configuration, using the inert gas core, for a neutral atom of indium in its ground state.
22.______[Ar]3d10 ______Give the electron configuration, using the inert gas core, for the +2 cationic form of zinc in its ground state.
23.___32______How many electrons are required to fill the “N” shell?
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24.___2______How many electrons are needed to fill any one of the orbitals in the “6p” subshell?
25.__F____ Which of the following is the highest energy subshell in the yttrium ion (Y+3)?
A) 4d; B) 5s; C) 5d; E) 6s; F) 4p; G) 5f
26.____Hf______If the highest-energy electron in a neutral atom has the following set of quantum numbers: n = 5 l = 2 m = -1 s = +1/2, what element is being described?
27.____3.16 Å______What is the wavelength (in Angstroms) of a photon if it possesses 6.28 x 10-16 joulesof energy?
6.28 x 10-16 = (6.63 x 10-34)(ν) ν= 9.47 x 1017 s-13.00 x 108 = λ( 9.47 x 1017 s-1)
λ = 3.16 x 10-10 m = 3.16 Å
28.__C___Which of the following forms of electromagnetic radiation possesses the least amount of energy per photon?
A) X rays; B) cosmic rays; C) radio waves; D) microwaves; E) visible light
29.___30____ An atom of hassium (Z# = 108) has a total of how many "p" electrons?
30.___7___ What is the number of orbitals in a subshell if the azimuthal quantum number (l) = 3?
31.__F_____Which of the following species is isoelectronic with a neutral argon atom?
A) Si+4; B) Se-2; C) P-3; D) Ca+2; E) La+3; F) both C & D; G) A, C, and D.
32.__[Ar] 3d10 4s1______Give the core electron configuration for a neutral copper atom.
33. Explain the reason for this abnormality.
A full d subshell is more stable than a full s subshell.