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Electrons
Test Description: Electronic Configurations and Light
Instructions: Answer all questions to get your test result.
1) What is the maximum number of electrons that a single orbital can hold?
A
3
B
2
C
1
D
4
2) How many electrons can a d sublevel hold?
A
16
B
6
C
2
D
10
3) According to the Aufbau Principle, which of the following sublevels is the lowest in energy?
A
3p
B
3s
C
2s
D
2p
4) The ground-state electron configuration of neon is 1s2 2s2 2p6. In this arrangement, how many of neon's orbitals are completely filled?
A
All of them
B
2
C
6
D
1
5) The noble gas configuration for bromine is (Ar) 3d10 4s2 4p5. How many unpaired electrons are there in an atom of bromine in the ground state?
A
2
B
3
C
0
D
1
6) A ground state atom of which element has one electron in its fourth and outermost energy level?
A
K
B
Na
C
Ga
D
B
7) A spherical electron cloud surrounding a nucleus would best represent
A
an f orbital
B
an s orbital
C
a d orbital
D
a p orbital
8) How many electrons can the fourth energy level hold?
A
18
B
32
C
8
D
24
9) Compared with an electron on the second energy level, an electron on the fourth energy level has:
A
particle nature
B
more energy
C
less energy
D
wave nature
10) According to Bohr, which location would be impossible for an electron to exist
A
On the second energy level
B
On the first energy level
C
On the third energy level
D
Between energy levels
*select an answer for all questions
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