Question

Use Figure 9.20, p. 364, to indicate the polarity of each bond with partial charges

(a) Br-Cl

(b) F-Cl

(c) H-O

(d) Se-H

(e) As-H

(f) S-N.

Short answer

Polarity is the division of electric charge into negatively and positively charged ends in a molecule or its chemical groups, which produces an electric dipole moment.

Step-by-step solution

Polarity and Electronegativity

As the difference in electronegativity widens, the electron distribution becomes more polarised and the partial charges of the atoms rise accordingly.

Polarity of each bond with partial charges 

(a) Br $\mathbf{\to }$ Cl

(b) F $\leftarrow$ Cl

(c) H $\mathbf{\to }$ O

(d) Se $\mathbf{\to }$ H

(e) As $\mathbf{\to }$ H

(f) S $\mathbf{\to }$ N