Multiple choice

The ground state term symbol for trivalent niobium ion is

  1. 3F2

  2. 5D0

  3. 2D5/2

  4. 1S0

  5. 4F3/2
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A Correct answer
Explanation

S = ½ x number of unpaired electrons = ½ x 2 = 1 2S + 1 = 2 x 1 + 1 = 3 L = 3 for d2 ion configuration for which the ground term is F J = L - S = 3 - 1 = 2 The ground state term is (2S + 1)LJ = 3F2 Thus, this option is correct.

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