The bonds in crystalline ammonium chloride are

A.

covalent and dative

B.

ionic and covalent

C.

ionic, covalent and dative

D.

ionic, covalent and hydrogen bond

Correct answer is C

N makes three covalent bonds with three Hydrogen and a coordinate (dative covalent) bond with with hydrogen ion, forming ammonium ion (NH\(_4 ^+\). The ammonium ion forms an ionic bond with chloride ion to form NH\(_4\)Cl.