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Which is the correct order of increasing...

Which is the correct order of increasing energy of the listed orbitals in the atom of titanium ?

A

3s 3p 3d 4s

B

3s 3p 4s 3d

C

3s 4s 3p 3d

D

4s 3s 3p 3d

Text Solution

Verified by Experts

The correct Answer is:
A
`Ti[22],[Ar]3d^(2)4s^(2)`
When electron will fill in 3d then it's energy will becomes less than 4s. So electron will emit from 4 s not from 3d. So energy of 3d will be less then 4s.
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