Question

the total value of magnetic quantum number(m) for L shell are​

Answer 1

Let me review the addition of angular momentum first: Each electron has its own orbital quantum number li and magnetic quantum number mi. Then for two electrons, total magnetic quantum number is obviously m = m1 + m2. Total orbital quantum number l has possibilities of l = l1 + l2, l1 + l2 - 1, ... , |l1 - l2|.