Question

Which of the following molecules are planar and have an angular geometry?

• A. $Cl{O}_3^{+}$
• B. $C{l}_2{O}^{+}$
• C. $H_3{O}^{+}$
• D. $B{F}_2^{-}$

Answer 1

Answer: (B), (D)

$B{F}_2^{-}$

$Cl{O}_3^{+}$ and $H_3{O}^{+}$ have more than two ligands. So we can rule them out for bent shape!

$B{F}_3$ is trigonal and if $F^{+}$ is removed, we get a bent molecule (planar as well).
A compound with 2 ligands is always planar (we ignore the non-bonding electrons).

$C{l}_{2}O$ is bent line water and $HOCl$. From dichlorine monoxide, if one electron from
he central oxygen atom is abstracted, then we get $C{l}_2{O}^{+}$ which is bent and planar!