An atom has a electrons in the first (K) shell, 8 electrons in the second (L) shell and 2 electrons in the third (M) shell . Give its electronic configuration and find out the following:
(a) Atomic number
(b) Total number of principal quantum numbers
(c) Total number of sublevels
(d) Total number of s-orbitals
(e ) Total number of p-electrons.

Explanation

To solve the question step by step, we will derive the electronic configuration of the atom based on the given distribution of electrons in the shells and then answer the sub-questions.

### Step 1: Determine the total number of electrons
- The atom has:
- 1 electron in the first (K) shell
- 8 electrons in the second (L) shell
- 2 electrons in the third (M) shell

...