PART B
101 .
I II
The N-N bond distance in N 2 is shorter than the N-N bond
distance in N 2 H 4
BECAUSE the atomic radius of H is smaller than the
atomic radius of N.
102 .
I II
Gas-phase elements absorb or emit only specific
wavelengths of visible light when excited by an electric
current
BECAUSE the energy levels that electrons can occupy
in gas-phase atoms and molecules are
continuous.
103 .
I II
Elemental iodine has a higher boiling point than
elemental bromine
BECAUSE iodine forms stronger covalent bonds than
bromine.
104 .
I II
The boiling point of H 2 O is higher than the boiling point of
H 2 S
BECAUSE H 2 S has a greater molecular mass than
H 2 O.
105 .
I II
The reaction of HCl (aq) and KOH (aq) goes to
completion
BECAUSE it is a neutralization reaction between a strong acid
and a strong base.
