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Select the correct statement regarding Slater rules.

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In P atom, ls electrons are more shielded than 2p electrons

In Zn atom, 3d electrons provide effective shielding to 3s electrons

In Zn, $Z_{eff}$ on 3s and 3p electrons is equal

$Z_{eff}$ on 4s electron is more than 3d electron because it is filled completely before 3d

answer is D.

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Detailed Solution

The actual positive (nuclear) charge that an electron in an atom with multiple electrons experiences is known as the effective nuclear charge.
In the case of Zn, the nuclear charge produced by the 3s and 3p electrons is equal.

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