Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
1.
|
The
letter "p" in the symbol 4p indicates the
____. a. | spin of an
electron | c. | principle energy
level | b. | orbital shape | d. | speed of an electron | | | | |
|
|
|
2.
|
What
is the next atomic orbital in the series 1s, 2s, 2p, 3s,
3p?
|
|
|
3.
|
According to the aufbau principle, ____. a. | an orbital may
be occupied by only two electrons | b. | electrons in the same orbital must have opposite
spins | c. | electrons enter orbitals of highest energy
first | d. | electrons enter orbitals of lowest energy
first | | |
|
|
|
4.
|
What
is the electron configuration of potassium?
|
|
|
5.
|
If
three electrons are available to fill three empty 2p atomic orbitals, how will the electrons
be distributed in the three orbitals? a. | one electron in each orbital | b. | two electrons in
one orbital, one in another, none in the third | c. | three in one
orbital, none in the other two | d. | Three electrons cannot fill three empty 2p atomic
orbitals. | | |
|
|
|
6.
|
How
many unpaired electrons are in a sulfur atom (atomic number 16)?
|
|
|
7.
|
How
many half-filled orbitals are in a bromine atom?
|
Short Answer
|
|
|
8.
|
Give
the electron configuration for a neutral atom of beryllium.
|
|
|
9.
|
Give
the electron configuration for a neutral atom of chlorine.
|
|
|
10.
|
Give
the electron configuration for a neutral atom of selenium.
|
Essay
|
|
|
11.
|
Explain why the 4s sublevel fills before the 3d sublevel begins to fill
as electrons are added.
|