Question

Q. (2) State Aufbau's principle. Write electronic configuration of (1) „Na?), (ii) 24Cr54​

Answer 1

Answer:

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The Aufbau principle states that electrons fill lower-energy atomic orbitals before filling higher-energy ones (Aufbau is German for "building-up"). By following this rule, we can predict the electron configurations for atoms or ions.

(i) [Ne] 3s¹

(ii) please refer the above attachment

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