(a) If the quantum number 'l' has value of 2, what are permitted values of the quantum number `m_l` ?
(b) An atomic orbital has n = 3, what are the possible values of l ?
(c ) An atomic orbital has l = 3, what are the possible values of `m_l` ?

Explanation

(a) If `l = 2`, the permitted values of m are :
`m_l = -2,-1, 0, +1, +2`
(b) For `n = 3, l` may have the value `l = 0,1,2`
(c ) For `l = 3, m_l` may have the values
`m_l = -3, -2, -1, 0, +1, +2, + 3`