Which of the following statements is true of hydrogen atom ?
A. Cl and N have comparable electronegativities yet there is no H- bonding in HCl because size of Cl is large.
B. Intermolecular H- bonding results in decrease in m.p. and b.p.
C. Ice has maximum density at `0^(@)C` due to H- bonding.
D. `KHCl_(2)(HCl_(2)^(-))` exists but `KHF_(2)(HF_(2)^(-))` does not exist due to lack of H- bonding in HCl.
