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The number of unpaired electrons present in palladium (Z = 46) atom is

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Zero

answer is C.

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Detailed Solution

Palladium atoms have 46 electrons and the shell structure is 2.8.18.18.0.
It's electronic configuration is
₄₆Pd:1s²,2s²,2p⁶,3s²,3p⁶,4s²,3d¹⁰,4p⁶,5s⁰,4d¹⁰
Here 5s⁰ ,4d¹⁰ is more stable than 5s²,4d⁸
The number of unpaired electron is zero

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