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Assertion (A): PbCl(2) is more stable th...

Assertion (A): `PbCl_(2)` is more stable than `PbCl_(4)`.
Reason (R ): `PbCl_(4)` is a powerful oxidising agent.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
B
`Pb^(2+)` is more stable than `Pb^(4+)` due to inert pair effect. Due to this reason `PbCl_(4)` decomposes very readily into
`PbCl_(2) and Cl_(2)`
`PbCl_(4)(s) rarr PbCl_(2)(s) + Cl_(2)(g)`
`Pb^(4+) + 2e^(-) rarr Pb^(2+)`
`2Cl^(-) rarr Cl_(2) + 2e^(2-)`
Thus `Pb^(4+)` salts are better oxidising agents.
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