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If in nature they may not be an element ...

If in nature they may not be an element for which the principle quantum number `n gt 4`, then the total possible number of elements will be

A

`60`

B

`32`

C

`4`

D

`64`

Text Solution

Verified by Experts

The correct Answer is:
A
For `n = 1`, maximum number of state `= 2n^(2) = 2` and for `n = 2, 3, 4,` maximum number of states would be `8, 18, 32` respectively, Hence number of possible elements
`= 2+ 8 + 18 + 32 = 60`
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