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The decreasing order of the second ionis...

The decreasing order of the second ionisation potential of K , Ca and Ba is
(At. No : K = 19 , Ca = 20 , Ba = 56)

A

KgtCagtBa

B

CagtBagtK

C

BagtKgtCa

D

KgtBagtCa

Text Solution

Verified by Experts

The correct Answer is:
A
Out of the three, K has the highest 2nd ionisation energy. Ca(higher up in the group) has a higher 2nd ioniation energy than Ba.
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