Question

The total number of electrons in a Nitrogen atom and a Chlorine atom are $7$ And $17$ respectively. Find the number of valence electrons in them.

Answer 1

1. The electrons present in the outermost shell of an atom is called Valence Electrons.
2. The atomic number of Nitrogen is 7.
3. Nitrogen ($\mathrm{N}$) has the electrical configuration $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^3$ (or) 2,5.
4. There are 5 electrons in the final shell.
5. $\mathrm{N}$ possesses five valence electrons as a result.
6. The atomic number of Chlorine is 17.
7. Chlorine's ($\mathrm{Cl}$) electrical configuration is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^5$ (or) 2,8,7.
8. Seven electrons make up the final shell.
9. $\mathrm{Cl}$ possesses seven valence electrons as a result.