Why He is placed in p block not in s block - it has a configuration of 2s- which is similar to 2 group element- Explain in detail either it-s a exception or a correct placement-

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Standard XII

Chemistry

Hund's Rule

Why He is pla...

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Why He is placed in p block not in s block , it has a configuration of 2s² which is similar to 2 group element? Explain in detail either it's a exception or a correct placement.

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