Which of the following contains (electrovalent) and polar (covalent ) bond1) CH42) H2O23) NH4Cl4) HCN

1) In NH₄Cl, the N-H bond is polar due to appreciable electronegativity difference between N (3.0) and H (2.1).

2) In HCN, the H-C and C-N bonds are polar due to electronegativity difference between C (2.5) and N (3.0) for H-C bond as well as between C (2.5) and H (2.1) for C-N bond.

3) In H₂O₂, the O-H bond is polar due to electronegativity difference between O (3.5) and H (2.1). Whereas, O-O bond is non-polar.

4) In CH₄, the C-H bonds are also polar.

Thank You

Ruchi

Askiitians Faculty