Question

Write probable election configuration of chromium and copper

Answer 1

The probable (expected) electronic configuration of chromium is 1s2 2s2 2p6 3s2 3p6 3d4 4s2 or [Ar] 3d4 4s2 . ii The probable (expected) electronic configuration of copper is 1s2 2s2 2p6 3s2 3p6 3d9 4s2 or [Ar] 3d9 4s2 .

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Answer 2

Answer:

Chromium's expected (probable) electron configuration is [Ar] 4s2 3d4, but actual is [Ar] 4s1 3d5.

Copper's expected (probable) electron configuration is [Ar] 4s2 3d9, but actual is [Ar] 4s1 3d10.

Explanation:

This is due to Hund's law of spin multiplicity. It states that electrons always arrange themselves in such a way as to add up to maximum spin.

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