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 10-19 J/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 10-18 J (1/62)
E = -6.06 x 10-20 J
-2Consider 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;
E) halogen;
F) inner transition metal; G) noble gas
D) chalcogen;
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?
===================================================================
18._Sn_____ What element is it whose neutral, isolated atom has two valence electrons in the 5s subshell,
and two half-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
-1/2
B) 5
0
0
+1/2
C)
5
3
-2
-1/2
D) 3
3
-1
+1/2
E)
1
1
+1
-1/2
F) 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?
-324.___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
joules of energy?
6.28 x 10-16 = (6.63 x 10-34)(ν)
ν = 9.47 x 1017 s-1
3.00 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____
30.___7___
An atom of hassium (Z# = 108) has a total of how many "p" electrons?
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.