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Assertion : In the series Sc to Zn, the ...

Assertion : In the series Sc to Zn, the enthalpy of atomisation of zinc is the lowest.
Reason : Zinc has greater number of unpaired electrons.

A

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

B

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

C

If assertion is trun but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Zinc does not have unpaired electrons in ground state as well as in its common oxidation state.
Enthalpy of atomisation depends upon the number of unpaired electron. Greater the number of unpaired electrons, stronger is the interatomic metallic bonding and higher is the ethalpy of atomisation.
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