NEET Chemistry The p-Block Elements (XII) Questions Solved


Account for the following:

(i) Sulphur in vapour form exhibits paramagnetic behaviour.

(ii) SnCl4 is more covalent than SnCl2.

(iii) H3PO2 is a stronger reducing agent than H3PO3.

(i) In vapour state sulphur partly exists as S2 molecule which has two unpaired electrons in the antibonding II orbitals and hence exhibits paramagnetism.

(ii) Sn+4 in SnCl4 has more polarising power than SnCl2

(iii) H3PO2 contains two P-H bonds while H3PO3 contains only one P-H bond therefore H3PO2 is stronger reducing agent.

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