Question

The energies of orbitals of H-atom are in the order
(1) 3s < 3p < 4s < 3d < 4p
(2) 3s < 3p < 3d < 45 < 4p
(3) 3s = 3p = 3d < 48 = 4p
(4) 3s = 3p = 3d < 4s < 4p​

Answer 1

OPTION 1

is the correct answer.

Why?

As according to n+l value the subshells are arranged.

for n {Principal quantum number}

s=0

p=1

d=2

F=3

for l {azimuthal quantum number }

s=1

p=2

d=3

f=4

so option 1 gives correct answer

hope u understand.

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