Name___________________________
CHM 110 – Practice Exam III Fall 2024
I. Circle the
one best answer
to each question below:
1. The first ionization energies of the elements _________ as you go from left to right
across a period of the periodic table, and _________ as you go from the bottom to the
top of a group in the table
a) increase, increase b) increase, decrease c) decrease, increase
d) decrease, decrease e) are completely unpredictable
2. In a hydrogen atom, an electron in which orbital can absorb a photon but not emit a
photon?
a) 3s b) 2s c) 3p d) 1s e) 3f
3. In which set of elements would all members be expected to have very similar chemical
properties?
a) O, S, Se b) N, O, F c) Na, Mg, K d) S, Se, Si e) Ne, Na, Mg
4. Which one of the following atoms has the largest radius?
a) I b) Co c) Ba d) Sr e) Ca
5. Which of the atoms below is the most electronegative?
a) Si b) Cl c) Rb d) Ca e) S
6. The 4d subshell in the ground state of atomic xenon contains ______ electrons.
a) 2 b) 6 c) 8 d) 10 e) 36
