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One among the following is the incrorrec...

One among the following is the incrorrect order of increasing ionisation energy :

A

`Cl^-`lt Arlt `K^+`

B

Klt Ca lt Sc

C

Au lt Ag lt Cu

D

Cslt Rblt K

Text Solution

Verified by Experts

The correct Answer is:
C
The ionisation energy of Au gt Ag. It is because of the filling of (n-2) f-orbitals as a result of which the effective nuclear pull increases.
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DINESH PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Brain Teaser-2
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