Verified Solution • 2025–26 Session moderate

QNEET-2017-Ch-945: NEET 2017 Chemistry - Class 12 NEET-2017-Ch-945 Solution: It is because of inability of \(ns^2\) electrons of the valence …

It is because of inability of

ns^2

electrons of the valence shell to participate in bonding that

Sn^{2+}

is oxidising while

Pb^{4+}

is reducing

Sn^{2+}

and

Pb^{2+}

are both oxidising and reducing

Sn^{4+}

is reducing while

Pb^{4+}

is oxidising

Sn^{2+}

is reducing while

Pb^{4+}

is oxidising

Multiple Choice Options

A Sn 2+ is oxidising while Pb 4+ is reducing
B Sn 2+ and Pb 2+ are both oxidising and reducing
C Sn 4+ is reducing while Pb 4+ is oxidising
D Sn 2+ is reducing while Pb 4+ is oxidising

Step-by-Step Verified Solution

The inertness of s-subshell electrons towards bond formation is known as inert pair effect. This effect increases down the group thus, for Sn, +4 oxidation state is more stable, whereas, for Pb, +2 oxidation state is more stable, i.e., Sn 2+ is reducing while Pb 4+ is oxidising

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