Question

Which of the following molecule/ion has all the three types of bonds, electrovalent, covalent and co-ordinate:

• A. $HCl$
• B. ${NH}_4^{+}$${Cl}^{-}$
• C. ${Cl}^{-}$
• D. $H_2{O}_2$

Answer 1

Answer: (B)

${NH}_4^{+}$${Cl}^{-}$

${NH}_4^{+}$${Cl}^{-}$ molecule has all the three types of bonds, electrovalent, covalent and co-ordinate. One $N-H$ bond is coordinate bond and three $N-H$ bonds are covalent bonds. Electrovalent (ionic) bond is present between ammonium ion and chloride ion.
$HCl$ and $H_2{O}_2$ contains covalent bonds only. ${Cl}^{-}$ ion is monoatomic ion, hence no bond is present.