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Question

Arrange s,p and d sub-shells of a shell in the increasing order to effective nuclear charge (Zeff) experienced by the electron present in them.

A
s>p>d
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B
p>s>d
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C
d>p>s
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D
none of the above
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Solution

The correct option is A s>p>d
Order or shielding effect is s>p>d>f.

This is because s is near to nucleus, so it will shield more the nuclear charge.

As Zeff=Zshieldingconstant

Hence, the correct option is A

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