Which combination is best explained byh the co-ordinate covalent bond

Options

A. `H^(+)+H_(2)O`
B. `Cl+Cl`
C. `Mg+1/2O_(2)`
D. `H_(2)+I_(2)`

Answer

A

Explanation

`H-overset(..)underset(H)underset(|)("O:")+H^(+) to H -overset(..)underset(H)underset(|)(H)to H`