The correct set of four quantum number for the valence (outermost) electron of radiation `(Z = 37)` is

Options

A. `5.0.0.+(1)/(2)`
B. `5.1.0.+(1)/(2)`
C. `5.1.1.+(1)/(2)`
D. `6.0.0.+(1)/(2)`

Answer

A

Explanation

Aufbau's principle : electron fills in orbital increasing order of energy level.