Multiple choice

Which of the following elements have half filled 5s orbital?

  1. Ytterbium
  2. Zirconium
  3. Niobium
  4. Molybdenum
  5. Technetium Select the correct answer using codes given below:

  1. 1, 2 and 3

  2. 1 and 3

  3. 2 and 3

  4. 3 and 4

  5. 4 and 5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Both niobium and molybdenum have half filled 5s orbitals. Niobium (41Nb): [Kr] 4d4 5s1 Molybdenum (42Mo): [Kr] 4d5 5s1

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