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Which is the wrong order for the stated ...

Which is the wrong order for the stated property ? .

A

`BagtSrgtMg` : atomic radius

B

`FgtOgtN` : first ionisation enthalpy

C

`ClgtFgtl` : electron affinity

D

`OgtSegtTe` : electronegativity

Text Solution

Verified by Experts

The correct Answer is:
B
On moving along the period, ionisation enthalpy increases. In second period, the order of ionisation enthalpy should be as follows : `FgtOgtN`
But N has half-filled structure, therefore, it is more stable than O. That's why is ionisation enthalpy is higher than O. Thus, the correct order of IE is
`FgtNgtO`.
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