Question

The number of waves made by a Bohr electron in an orbit of maximum magnetic quantum number $+2$ is:

• A. $3$
• B. $4$
• C. $2$
• D. $1$

Answer 1

The correct option is A $3$

Maximum magnetic quantum number $m=+2$.

The value of m is from $-l$ to $+l$.
So, $l=2$.

For a given value of $n,l$ can have values 0 to $n-1$.

So, when $l=2$, $n=3$.

The number of waves formed is equal to the principal quantum number or the number of orbits.
Thus, the number of waves made by a Bohr electron in an orbit of the maximum magnetic quantum number $+2$ is $3$.

Hence, option A is correct.