Which of the following statements are not correct?

Options

A. Hydrogen bonds are not present amongst gaseous hydrogen fluoride
B. Both `SO_4^(2-)` and `SO_3^(2-)` have tetrahedral geometry
C. In ozone both the bond lengths between oxygen atoms are not identical because it contains one double bond and one coordinate - covalent bond
D. In`CO_3^(2-)` all the three carbon-oxygen bond length are identical.

Answer

A, B, C

Explanation

Fluorine is the most electronegative element. A strong polarization of bonding electrons occurs in HF leading to hydrogen bonding even in the gaseous state. B) Due to the resonance, both bonds are identical