Among the following which contain ionic, covalent and dative bonds is

${\text{NH}}_4\text{Cl}$  Because,

 i) In ammonium chloride a dative bond is existed between ammonia molecule and hydrogen ion $\left(N{H}_{3}and{H}^{+}\right)$

ii) Ammonia molecule is formed by covalent bonds (between $N\&H-N{H}_3$ )

iii) Ionic bond is present between ammonium ion and Chloride ion $\left(N{H}_4^{+}andC{l}^{-}\right)$ .