Download Extra Quantum Practice

NAME _____________________________
PRACTICE, AND MORE PRACTICE WITH QUANTUM
DIRECTIONS: You asked, I’m delivering… Complete each of the following by selecting or by providing the
most correct response. You should be using your reference charts, you know … so get’ em out…. The answers
are at the end….GO, GO GAGET THINKING MACHINE
For questions 1-4 us the following choices A)-D). A choice may be used once, more than once, or not at all.
A) 1s ↑ 2s ↑↓
B) 1s ↑↓ 2s ↑
C) [Kr] 4d ↑
↑
D) 1s ↑↓ 2s ↑↓ 2p ↑↓ ↑↓
5s↑↓
↑↓
1) Which of the choices is the least reactive element, based upon the ground state electron configuration?
2) Which of the choices might refer to a transition element?
3) Which of the choices represents the ground state electron configuration of the most easily oxidized atom (the
most active metal?)
4) Which of the choices represents an excited state electron configuration?
*************************
5) The ground state configuration of Fe3+ is which of the following?
A)
B)
C)
D)
[Ar]
[Ar] 3d5
[Ar] 3d6 4s2
[Ar] 3d10 4s1
6) Which of the following have all electrons paired (in correlated spins)?
A)
B)
C)
D)
Kr, Ca, and P
Ne, Be, and Zn
Ar, K, and Ba
He, Sr, and C
7) Which of the following is a ground state electron configuration of a halogen?
A)
B)
C)
D)
1s2 1p6 2s2 2p3
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d1 5s2
1s2 2s2 2p6 3s2 3p6 3d3
1s2 2s2 2p5
8) Which idea relates to the fact that we cannot know the exact position as well as the momentum of an
electron, simultaneously?
A)
B)
C)
D)
Pauli Exclusion Principle
Hund’s Rule
Heisenberg Uncertainty Principle
Aufbau Principle
9) An atomic orbital can hold no more than ____ electrons.
A)
B)
C)
D)
1
2
6
10
10) The maximum number of electrons that can be held in the 4th principal energy level is equal to:
A)
B)
C)
D)
2
18
32
50
11) Which of the following best represents the valence principal energy level of an atom of phosphorus in the
ground state?
A) 3s ↑↓
3p ↑↓ ↑
B) 3s ↑
3p ↑↓ ↑↓
C) 3s ↑↓
3p ↑↓ ↑↓ ↑↓
D) 3s ↑↓
3p ↑
12) Given:
↑
↑
[Kr] 4d10 5s2 5p2
a) In what period of the periodic table is this element found?
b) What is the valence principal energy level of this atom?
c) How many valence electrons does an atom of the represented element have?
d) How many ½ -filled orbitals does the atom possess?
e) How many completely filled sublevels does the atom have?
13) Given: 1s2 2s2 2p4
a) Will atoms with the above ground state configuration, gain or lose electrons, in a reaction with
atoms of calcium?
b) The chemistry of an atom with the above ground state configuration is most like:
i) carbon
ii) sulfur
iii) nitrogen
iv) neon
c) The electrons of which sublevel are highest (greatest) in energy? __________
d) Which electrons are most strongly attracted to the protons of the nucleus of this atom?
i) They are all attracted exactly the same to the nucleus
ii) 2p, due to a greater position from the nucleus.
iii) 1s, as they are closest to the nucleus
iv) 2s, as they are repelled by both the 1s and the 2p
14) Atoms of which element have electrons in principal energy level 3 (or where n = 3) ?
A) Neon
B) Argon
C) Krypton
D) Xenon
15) An atom with the electron configuration of 1s2 2s2 2p6 3s23p6 3d10 4s2 4p5 is best classified as a(n)
A) noble gas
B) alkaline-earth metal
C) halogen
D) transition metal
16) An atom with the electron configuration of 1s2 2s2 2p6 is best classified as a(n)
A) noble gas
B) alkaline-earth metal
C) halogen
D) transition metal
17) How many sublevels contain electrons in the configuration 1s2 2s2 2p6 3s23p64s1
A) 1
B) 2
C) 3
D) 6
18) How many valence electrons are represented by the configuration: 1s2 2s2 2p6 3s23p6
A) 6
B) 2
C) 3
D) 8
19) The element with that has atoms with the electron configuration of 1s22s22p63s23p64s2 is best
classified as a(n)
A) alkali metal
B) alkaline-earth metal
C) transition metal
D) noble gas
20) When an atom has only four valence electrons, they would be found in (A)
A) s sublevel, only
B) p sublevel, only
C) s and p sublevels , only
D) s, p and d sublevels, only
21) This concept states that we can not know with precision the position and the velocity of an electron
simultaneously was one of the foundations of modern quantum mechanics. This concept is called the
A) Heisenberg Uncertainty Principle
B) Pauli Exclusion Principle
C) Aufbau Principle
D) Hund’s Rule
22) Which of the following electron configurations correspond to an excited state configuration?
A) 1s22s22p63s1
C) 1s22s22p43s1
B) 1s22s22p6
D) 1s22s22p63s23p1
23) Which of the following representations of excited states of atoms is IMPOSSIBLE?
A) [Ne]3s23p64s13d2
C) [Ne]3s23p34s1
B) [Ne]3s23p64s23d11
D) [Ne]3s23p64s23d5
24) The region that is the most probable location (energy) of an electron in an atom is:
A)
B)
C)
D)
a sublevel
an orbital
a Principal Energy Level
an orbit
25) What is the total number of sublevels in the fourth principal energy level?
A) 1
B) 2
C) 3
D) 4
26) Which sublevel contains a total of 5 orbitals?
A) s
B) p
C) d
D) f
27) The maximum number of electrons that can be held in a single orbital of a d-sublevel is
A) 1
B) 2
C) 10
4) 14
28) According to the wave-mechanical model of the atom, electrons in an atom
A)
B)
C)
D)
travel in defined circles
are most likely found in the excited state
have a positive charge
are located in orbitals beyond/outside the nucleus
29)
A)
B)
C)
D)
Answers:
1) D 2) C
3) B
4) A
5) B 6) B 7) D
8) C
9) B
10) C
11) D
12) a) 5 b) 5 c) 4 d) 2 e) 10
13) a) gain (it is a nonmetal) b) ii (same family/group) c) 2p d) iii (closer = stronger)
14) B
15) C
16) A
17) D
18) D
19) D
20) C
21) A
22) C
23) B (3d can hold only 10 e-)
24) B
25) D
27) B
28) D
26 ) C
29) B Boron has 5 electrons. You need to configure them, using Aufbau and Hund's Rule