Maximum `p pi-p pi` back bonding exists in

d_pi - p_pi bonding exists in

The p pi- p pi back bonding occurs in the halides of boron and not in those of aluminium. Explain.

(p pi-p pi) back bonding occurs in the halides of boron but not in those of aluminium. Explain.

p pi - p pi back bonding occurs in the case of boron halides but not in the case of aluminium halides-why?

(p pi-p pi) back bonding occurs in the halides of boron but not in those of aluminium. Explain.

Assertion : Both rhombic and monoclinic sulphur exist as S_8 but oxygen exists as O_2 . Reason : Oxygen forms p pi -p pi multiple bond due to small size and small bond length but p pi -p pi bonding is not possible in sulphur.