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

Question

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


a) HF has a higher boiling point than F2

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

Answer 1

a) is true b/c bp of HF is 19.5 and F2 is -188.1
b.)

Answer 2

HF has a more beneficial boiling aspect than F2 reason- Difluorine can't hydrogen bond with different difluorine atoms, so its boiling aspect is 80 5.03 ok. HF is significantly hydrogen bonded, ensuing in a boiling aspect of 293 ok. For the boiling factors of hydrogen compounds of team 16 H2O > H2Te > H2Se > H2S reason- H20 is significantly hydrogen bonded, ensuing in its severe boiling aspect (373 ok), Hydrogen Telluride has a more beneficial boiling aspect (274 ok)because a number of its electrons are loosely held, ensuing in dipole-dipole interactions. similar is going for Hydrogen Selenide (231.9 ok), and Hydrogen Sulfide (212.8 ok) has the smallest boiling aspect. For the boiling factors of hydrogen compounds of team 14 CH4 > SnH4 > GeH4 > SiH4

Answer 3

a only.