The quantum number of four electrons are...

The quantum number of four electrons are given below :
n = 4, l = 2, `m_1` = -2, `m_s` = -1/2
n = 3, l = 2, `m_1` = -1, `m_s` = +1/2
n = 4, l = 1, `m_0` = -2, `m_s` = +1/2
n = 3, l = 1, `m_1` = -1, `m_s` = -1/2.
The correct order of their increasing energies will be:

A

`IV lt II lt III lt I`

B

`I lt III lt II lt IV`

C

`IV lt III lt II lt I`

D

`I lt II lt III lt IV`

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The correct Answer is:

A

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