The correct set of four quantum numbers for the valence elecron of rubidium atom (Z = 37) is :
5, 1, 1,+ 1/2
6,0,0 + 1/2
5,0,0 + 1/2
5,1,0 + 1/2
Rb (37): 1S2 2S2 2p6 3S2 3p6 4S2 3d10 4p6 5S1
for 5S,
n = 5, l = 0, m= 0, s=+1/2 or -1/2
Option 1)
5, 1, 1,+ 1/2
this is the incorrect option
Option 2)
6,0,0 + 1/2
this is the incorrect option
Option 3)
5,0,0 + 1/2
this is the correct option
Option 4)
5,1,0 + 1/2
this is the incorrect option