20.if an atom has complete K and L shell , what would be its atomic number?
As the maximum capacity of K is 2 and L is 8, therefore the total number of electron is 10.
Hence the element is Ne.
If K,L,M shells of an atom are completely filled with electrons, then : I) What would be the total number of electrons in the atom? &
2)Find its valency.
An atom has complete K and L shell. Is it an atom of a metal, non metal, novel gas? Justify
If an atom has two electrons in its outermost shell. Which among the following can be the atomic number of that atom?