A) \[5p<4f<6s<5d\]
B) \[5p<65<4p<5d\]
C) \[4f<5p<5d<6s\]
D) \[5p<5d<4f<6s\]
Correct Answer: B
Solution :
The order in which the energies of the orbitals increases as follow \[1s,\text{ }2s,\text{ }2p,\text{ }3s,\text{ }3p,\text{ }4s,\text{ }3d,\text{ }4p,\text{ }5s,\text{ }4d,\text{ }5p,\text{ }6s,\] \[4f,\text{ }5d,\text{ }6p,\text{ }7s,\text{ }5f,\text{ }6d,\text{ }7p,\text{ }8s\] Hence, the correct order of increasing energy of orbitals is \[5d>4f>6s>5p.\]
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