The number of valence electrons that can be present in the second element of any period is

The number of valence electrons present in the 12th element of any period is

The number of valence electrons present in noble gases is:

The number of valence electrons present in Ca atom

How many valence electrons are present in halogen elements?

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

(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?

The maximum number of valency electrons possible for atom in the second period of the periodic table is :

How does number of Valence electrons on moving from left to right In the second period of a periodic table