JEE Main | 2014Atomic StructureMedium
Question
The correct set of four quantum numbers for the valence electrons of rubidium atom (Z = 37) is
Options
A.5, 0, 0, + 
B.5, 1, 0, +
C.5, 1, 1, +
D.5, 0, 1, +
Solution
37 → 1s22s22p63s23p63d104s24p65s1
So last electron enters 5s orbital
Hence n = 5, l = 0, m1 = 0, ms = ±
So last electron enters 5s orbital
Hence n = 5, l = 0, m1 = 0, ms = ±
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