The total number of electrons in a nitrogen atom is 7. Find the number of valence electrons in it.

The number of valence electrons in carbon atom is

The number of valence electrons in carbon atom is

The number of valence electrons in a graphite atom is :

The total number of valency electrons in PH_4^+ion is :

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

The number of valence electrons present in Ca atom

The atomic number of the inert gas in which the total number of d-electrons is equal to the difference in the numbers of total p-and s-electrons is-