Which of the following statements about boiling points of molecular substances are correct ?

Question

a) SO2(l) has a higher boiling point than H2O(l)

b) For the boiling points of hydrogen compounds of Group 16
H2Te > H2Se > H2S > H2O

c) For the boiling points of hydrogen compounds of Group 17
HF > HI > HBr > HCl

d) For the boiling points of hydrogen compounds of Group 14
CH4 > SnH4 > GeH4 > SiH4

Note: there may be more than one answser.

I thought that the more electrons u had, the higher the boiling point is. So i tried a and it was wrong. then i tried ab and it was wrong.
plz help me asap

Answer 1

Only c is correct.

Answer 2

a) water has hydrogen bonding which tends to hold the molecules together, so water is a liquid at room temperature, whilst sulphur dioxide is a gas, so a is false.

b) Is false

c) is true

d) Is false