Question

Which observation(s) (all true) is/are directly related to hydrogen bonding?

I. Hydrogen has the lowest density of all gases.

II. The boiling point of is greater than the boiling point of .

III. The boiling point of (ethene) is less than the boiling point of (ethane).

IV. Ice floats on liquid water.

V. Hydrogen is less electronegative than carbon.

 

A. II only

B. III, IV, V only

C. IV only

D. II, III, IV only

E. II, IV only