Question

an atom of an element has 4 electrons in the outermost M shell. what will be the atomic number at this element? name this element. find the valency of this element. draw a schematic diagram of this atom showing the distribution of electrons in its shells

Answer 1

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