Q.
Which is the correct order of increasing energy of the listed orbitals in the atom of titanium? (At.no. Z=22 )
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a
4s 3s 3p 3d
b
3s 3p 3d 4s
c
3s 3p 4s 3d
d
3s 4s 3p 3d
answer is C.
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Detailed Solution
Ti(22):1s22s22p63s23p64s23d2∴Order of increasing energy is 3s,3p,4s,3d(n+1) rule : As n+1 value increases energy of orbital increases . If n+1 value same then energy of orbitals depends on the “n” values, as n value increases energy increases.
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