Question

How many valence electrons are present in nitrogen having atomic number 7 ?

Answer 1

1. The electrons present in the outermost orbit or valence shell are called valence electrons.
2. Atomic number of nitrogen ($\mathrm{N}$) = $7$
3. Therefore, distribution of electrons = $2,5\mathrm{or}$ $$\begin{gathered} \mathrm{K}\mathrm{L} \\ 25 \end{gathered}$$
4. Hence $\mathit{5}\mathit{}$valence electrons are present in nitrogen having atomic number 7.