First slide

Quantum mechanical model of the atom

Question

For a given principal level n = 4, the energy of its subshells is of the order

Moderate

A

s < d < f < p
B

s < p < d < f
C

d < f < p < s
D

s < p < f < d

Solution

energy of subshell can be calculated as (n+l) and for a shell it will be always s < p < d < f

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