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Stability of Fully Filled and Half Filled Orbitals

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Question

What is common feature in the electronic configuration of metal atom?

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Solution

Metals are electropositive in character that means they are ready to lose electron. For ex
Na - 2,8,1
Ca - 2,8,8,2
Al - 2,8,3
So the valence electron in each case is easily given out by the metal to get the stability or octet configuration.

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Stability of Fully Filled and Half Filled Orbitals

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