Which of following statement is not true?

Options

A. HF is more polar than HBr
B. CuCl is more covalent than NaCl
C. `HF` and `B_(2)` are isoelectronic species having `sigma` bond
D. Chemical bond formation takes place when forces of attraction overcome the forces of repulsion

Answer

C

Explanation

Single bond in `B_(2)` is not `sigma` bond