Draw a sketch of Bohr's model of an atom with three shells.

(N/A) Bohr's model of an atom describes the atom as a small,positively charged nucleus surrounded by electrons that travel in circular orbits.
These orbits are called energy levels or shells,represented by the principal quantum number $n$.
For an atom with three shells,the shells are designated as follows:
$1$. The first shell $(n = 1)$ is the $K$-shell.
$2$. The second shell $(n = 2)$ is the $L$-shell.
$3$. The third shell $(n = 3)$ is the $M$-shell.
The nucleus is at the center of these concentric circles.