The number of valence electrons in a graphite atom is :

The electronic configuration of an atom is 2,8,2 . The number of valence electrons in the atom is

The number of valence electrons in carbon atom is

The number of valence electrons in carbon atom is

The number of valence electrons present in Ca atom

(a) What is the number of valence electrons in the atoms of first element in a period? (b) What is the usual number of valence electrons in the atoms of the last element in a period?

What is the number of valence electrons in the atoms of first element in a period?

(a) What is the usual number of valence electrons and valency of group 18 elements of the periodic table? (b)What happens to the number of valence electrons in the atoms is elements as we go down in a group of the periodic table?

The number of valency electrons in carbon atom (Z=6) is