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Question

4d,5p,5f and 6p orbitals are arranged in the order of decreasing energy. The correct order is:

A
5f>6p>5p>4d
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B
6p>5f>5p>4d
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C
6p>5f>4d>5p
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D
5f>6p>4d>5p
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Solution

The correct option is A 5f>6p>5p>4d
The (n + l) values are given below,
4d = 4 + 2 = 6
5p = 5 + 1 = 6
5f = 5 + 3 = 8
6p = 6 + 1 = 7
The correct order of energy would be:
5f > 6p > 5p > 4d

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