What is the general electronic configuration for the $2^{nd}$ row transition series?
- A$[Ne] 3d^{1-10} 4s^2$
- B$[Ar] 3d^{1-10} 4s^{1-2}$
- C$[Kr] 4d^{1-10} 5s^{1-2}$
- D$[Xe] 5d^{1-10} 5s^{1-2}$
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