Question

an atom of an element has 4 electrons in the outermost M- sheel .what wil be thr atomic number of this element?name this element.​

Answer 1

$\huge\tt\orange{Answer}$

shell , so , total no. of electron = 2+8+4= 14 = atomic no. and it is silicon . It's valency is 4 which is metalloid.

$\huge\tt\orange{thnks}$