Question

Which is a correct set of values of m for one of the subshells of n = 2?
–1, 0, 1
–1, –2, 0, 1, 2
–1, –2, –3, 0, 1, 2, 3
–1, –2, –3, –4, 0, 1, 2, 3, 4

Answer 1

-1, 0, 1

Reason: For n = 2 the allowed l values are 0 and 1. For l = 1 (the 2p subshell) m = -1, 0, +1.