Question

Three elements S and A. have atomic numbers 4 and 12 respectively State the number of valence electrons present in each of the elements.
I understood absolutely nothing
(ー_ー゛)​

Answer 1

Answer:

A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Explanation

Explaining something to yuh is difficult -_-

Didn't you shocked how I get ur id ?