The valence shell of an element of atomic number 35 is the _____ shell.

The number of electrons present int the valence shell of an atom with atomic number 38 is

The valence shell of transition element consists of

(a) What are valence electrons ? Where are valence electrons situated in an atom ? (b) What is the number of valence electrons in the atoms of an element having atomicm number 13 ? Name the valence shell of this atom.

The valence shell of an element ""_(20)^(40)X is the 3rd shell.

What is the number of valence electrons in the atom of an element A having atomic number 20? Name the valence shell of this atom.