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What is wrong with writing the electron configuration of a ground state atom as 1s2 2s2 2p6 3s2 3p6 3d10 4s2 ?

Sagot :

Answer:

Writing of the subshells

Explanation:

Given configuration:-

[tex]\\ \sf\longmapsto 1s^22s^22p^63s^23p^63d^{10}4s^2[/tex]

Actual configuration:-

[tex]\\ \sf\longmapsto 1s^22s^22p^63s^23p^64s^23d^{10}[/tex]

This is because 4s orbital is less in energy than that of 3d