For the carbon and nitrogen family hydrides, we have the following boiling points:
Carbon Family, °C Nitrogen Family, °C
CH4, 164 ………………………NH3, 33
SiH4, 112 ………………………PH3, 88
GeH4, 88 ………………………AsH3, 55
SnH4, 52 ………………………SbH3, 17
Account for the following:
a. The general trend in the boiling points of the binary hydrides.
b. The unusual boiling point of ammonia.
c. The observation that the nitrogen family hydrides have boiling points that are notably higher than those of the carbon family.