KCET2009ChemistryStructure of Atom
The correct set of four quantum numbers for outermost electron of potassium (Z=19) is
Options
- A4,1,0, 1 2
- B3,1,0, 1 2
- C4,0,0, 1 2
- D3,0,0, 1 2
Correct answer
C. 4,0,0, 1 2
Step-by-step solution
K (19): 1 ~s ², 2 ~s ² 2 p ⁶, 3 ~s ² 3 p ⁶, 4 ~s ¹4 s¹ is the valence electron in potassium, hence the correct set of four quantum numbers for outermost electron is 4,0,0, 1 2 .