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Question

The element whose electronic configuration is 1s2,2s2,2p6,3s2 is:

A
metal
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B
mettalloid
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C
inert gas
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D
non-metal
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Solution

The correct option is A metal
According to question element have 12 electrons so it is Mg element and its last shell configuration is 3s2 so that its belongs from s block and s block contains only metals.

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