Question

What is the names and symbols of an element having the electronic configuration?

$$\begin{gathered} \mathrm{K}\mathrm{L}\mathrm{M}\mathrm{N} \\ 28 \end{gathered}$$

Answer 1

1. The element having the electronic configuration $$\begin{gathered} \mathrm{K}\mathrm{L}\mathrm{M}\mathrm{N} \\ 28 \end{gathered}$$is $\mathrm{Neon}\left(\mathrm{Ne}\right)$.

2. There are $10\mathrm{electrons}$present in Neon, two electrons in the $\mathrm{K}\mathrm{shell}$and $8\mathrm{electrons}$in the $\mathrm{L}\mathrm{shell}$.

3. The atomic number of Neon($\mathrm{Ne}$) is $10$

4. We know, $\mathrm{Atomic}\mathrm{number}=\mathrm{Number}\mathrm{of}\mathrm{electrons}=\mathrm{Number}\mathrm{of}\mathrm{protons}$ =$10$

Thus, Neon($\mathrm{Ne}$) has an electronic configuration $$\begin{gathered} \mathrm{K}\mathrm{L}\mathrm{M}\mathrm{N} \\ 28 \end{gathered}$$