Which is the correct order of increasing energy of the listed orbitals in the atom of titanium ? (At. No. Z = 22)

Options

A. 4s 3s 3p 3d
B. 3s 3p 3d 4s
C. 3s 3p 4s 3d
D. 3s 4s 3p 3d

Answer

C

Explanation

The electronic configuration of Ti (Z=22) is ,
`1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(2)`
`:.` order of increasing energy , 3s 3p, 4s, 3d