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Question

The screening effect of delectrons is


A
Equal to the pelectrons
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B
More than pelectrons
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C
Same as felectrons
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D
Less than pelectrons
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Solution

The correct option is D Less than pelectrons
     Penetration describes the proximity of electrons in an orbital to the nucleus. Electrons that have greater penetration can get closer to the nucleus and effectively block out the charge from electrons that have less proximity and hence have higher screening effect.
  For the same value of n, the order of penetrating power is
s>p>d. The screening effect also follows the same order.


Hence the screening effect of d-electron is less than pelectrons .

Chemistry

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