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Question
An element of p-block in which last electron enters into s-orbital of valence shell instead of p-orbital is:
An element of p-block in which last electron enters into s-orbital of valence shell instead of p-orbital is:
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Solution
The correct option is A He
Electronic configuration of He is 1s2. It is kept in p-block with group 18 elements even after last electron enters into s-orbital of valence shell instead
of p-orbital because it is a noble metal.
Electronic configuration of He is 1s2. It is kept in p-block with group 18 elements even after last electron enters into s-orbital of valence shell instead of p-orbital because it is a noble metal.
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