The electronic, identified by quantum numbers n and l, (i) `n = 4, l = 1`, (ii) `n = 4, l = 0`, (iii) `n = 3,l = 2`, (iv) `n = 3, l = 1` can be placed in order of increasing energy, from the lowest to highest, as

Options

A. `(4) lt (2) lt (3) lt (1)`
B. `(2) lt (4) lt (1) lt (3)`
C. `(1) lt (3) lt (2) lt (4)`
D. `(3) lt (4) lt (2) lt (1)`

Answer

A

Explanation

The orbitals are (1) 4p (2) 4s (3) 3d (4) 3p.
Increasing orber of energies is :
`(4) 3p < (2) 4s < (3) 3d < (1) 4p`.