1.

Assertion: Atomic size of sivler is almost equal to that of gold. Reason: d-subshell has low penetration power and produce poor shielding.

Answer»

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

Solution :ATOMIC size of SILVER is almost EQUAL to that of gold DUE to lathanide contraction.


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