Question

Choose the odd one out and GIVE REASON:- Sodium, Copper, Silver, Iron

Answer 1

Answer:

Iron

Explanation:

because Iron (Fe) has only two electrons in its outermost shell

and copper l (Cu) , silver (Ag), sodium (Na) have one electron in outermost shell

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Answer 2

It has something to do with electronic configuration.

Your Answer is Iron. As it's outer electronic config. is different.

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