Question

which of the following orbital have maximum energy?
3s 3p 4s 3d​

Answer 1

Explanation:

The 3d orbital is higher in energy than the 4s,3p,3s orbital.

Answer 2

Answer: 3d has the maximum energy.

Explanation:

Energy of an orbital depends on (n + l) value of the orbital.

For s orbital, l = 0

For p orbital, l = 1

For d orbital, l = 2

For f orbital, l = 3

3s

n = 3

l = 0

n + l = 3

3p

n = 3

l = 1

n + l = 4

4s

n = 4

l = 0

n + l = 4

3d

n = 3

l = 2

n + l = 5

(n + l) value is maximum for 3d. Hence, 3d has maximum energy.

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