4.5.1: Practice Electronic Structure
- Page ID
- 424634
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Exercise \(\PageIndex{1}\)
Which orbital is the next to fill after the 4s orbital?
- Answer
-
3d orbital
Exercise \(\PageIndex{1}\)
Which orbital sublevel does NOT exist?
a) 3d
b) 4f
c) 2d
d) all exist
- Answer
-
c (The main level 2 only has 2s and 2p sublevels.)
Exercise \(\PageIndex{1}\)
How many electrons can fit in the 4d sublevel?
- Answer
-
10 electrons
Exercise \(\PageIndex{1}\)
Give the electron configuration for each of the following atoms.
a) Zn
b) K
c) Br
- Answer a
-
1s2 2s2 2p6 3s2 3p6 4s2 3d10 (total of 30 electrons)
- Answer b
-
1s2 2s2 2p6 3s2 3p6 4s1 (total of 19 electrons)
- Answer c
-
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 (total of 35 electrons)
Exercise \(\PageIndex{1}\)
Give the electron configuration for each of the following ions.
d) O2–
e) K1+
f) Br1–
- Answer d
-
1s2 2s2 2p6 (total of 10 electrons)
- Answer e
-
1s2 2s2 2p6 3s2 3p6 (total of 18 electrons)
- Answer f
-
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 (total of 36 electrons)