Question

14. The following table gives experimental boiling points for a series of compounds containing group 16 elements bonded to hydrogen atoms. a) (2 marks) Briefly explain the main reason why boiling point decreases from H2Te to H2Se to H2S. b) (1 mark) Briefly explain why H2O seemingly breaks this trend with a higher boiling point compared to most of the others.

Fig: 1

Fig: 2

Fig: 3

Fig: 4