Manipal MET2019Chemistryd and f Block Elements
What is the general electronic configuration for 2nd row transition series?
Options
- A[ Ne ] 3 d¹⁻¹⁰, 4 s^2
- B[ Ar ] 3 d¹⁻¹⁰, 4 s¹⁻²
- C[ Kr ] 4 d¹⁻¹⁰, 5 s¹⁻²
- D[ Xe ] 5 d¹⁻¹⁰, 5 s¹⁻²
Correct answer
C. [ Kr ] 4 d¹⁻¹⁰, 5 s¹⁻²
Step-by-step solution
Transition elements have three series 3 d , 4 d and 5d. 3 d series has elements 21( Sc ) to 30( Zn ) atomic number. 4 d series has elements 39 (Y) to 48 (Cd) atomic number. [ Kr ] 4 d¹⁻¹⁰, 5 s¹⁻² has IInd row series.