JEE Advance - Chemistry (1985 - No. 7)
What is the maximum number of electrons that may be present in all atomic orbitals with principal quantum number 3 and azimuthal quantum number 2?
答え
10
説明
For n = 3 and l = 2 (i.e., 3d orbital), the values of m varies from –2 to +2, that is, −2, −1, 0, +1, +2 and for each m there are 2 values of s, that is, +1/2 and −1/2.
So the maximum number of electrons in five 3d orbitals is 5 × 2 = 10.