Question

Which of the following cannot behave as a ligand

• A. $P{H}_3$
• B. $N{O}^{\oplus }$
• C. $B{F}_3$
• D. $B{r}^{\ominus }$

Answer 1

The correct option is C $B{F}_3$

$B{F}_3$ doesn’t have an electron pair to donate to central metal atom or ion.