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Assertion: Electron gain enthalpy always...

Assertion: Electron gain enthalpy always becomes less negative as we go down a group in Modern periodic table.
Reason: The size of the atom increase on going down the group in Modern periodic table and the added electron would be farther from the nucleus.

A

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

B

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

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
`S-1`: Electron gain enthalpy does not always become less negative as we go down a group in Modern periodic table.
Ex. `Delta H_(eg)(2p series) lt DeltaH_(eg)(3p series)`.
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