Atomic Structure-Please Help me out

The logic provided above by you all is correct.
As m has a max value of +3, therefore l = 3 & therefore, n can have value 4.

Also we know that nλ = 2πr (Using mvr = (nh/2π) & λ = (h/mv)

Therefore, the number of waves made by the electron would be 4.

3?

yes I think 3

yes the answer is 3

:)

The no. of waves made by an electron = Principal Quantum number of the electron.

This can be showed.

i think that...since here magnetic quantum no.is given ....which is +3...azimuthal quantum number should be at least equal to 3...which is only possible when n=4..thus,cant the answer be 4????

so the answer is 4...i guess??

ok...got it...thanks....