The electronic configuration of Pt (atomic nu | vedclass

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Question

(A) The atomic number of $Pt$ is $78$. Following the Aufbau principle,the expected configuration is $[Xe]\, 4f^{14}\, 5d^{8}\, 6s^{2}$. However,$Pt$ e

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$[Xe]\, 4f^{14}\, 5d^{9}\, 6s^{1}$

Vedclass · Answer

(A) The atomic number of $Pt$ is $78$. Following the Aufbau principle,the expected configuration is $[Xe]\, 4f^{14}\, 5d^{8}\, 6s^{2}$. However,$Pt$ exhibits an exceptional electronic configuration due to the stability of the $d^{9}s^{1}$ arrangement. Therefore,the correct electronic configuration is $[Xe]\, 4f^{14}\, 5d^{9}\, 6s^{1}$.

The electronic configuration of $Pt$ (atomic number $78$) is $...$

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