Question

On going through the modern periodic table it is seen that the element li,be,,b,c,n,o abd fe velong to the period?

Answer 1

Lithium(Li), Beryllium(Be), Boron(B), Carbon (C), Nitrogen (N), Oxygen (O) and Fluorine (F) belong to the 2nd period. But, Iron(Fe) belongs to 4th period.

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