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Q. The correct order of increasing energy of atomic orbitals is

BHUBHU 2008

Solution:

The order in which the energies of the orbitals increases as follow
$1 s, 2 s, 2 p, 3 s, 3 p, 4 s, 3 d, 4 p, 5 s, 4 d, 5 p, 6 s , 4 f, 5 d, 6 p, 7 s, 5 f, 6 d, 7 p, 8 s$
Hence, the correct order of increasing energy ' of orbitals is
$5 d > 4 f > 6 s > 5 p$