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Q.

Statement (A): Energy of 1s orbital is more than that of 2s orbital.

Statement (B): 4p is filled before 3p . 

Statement (C) : Energy of 3p is less than that of 4p .

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a

All the above statements are correct

b

All the above statements are incorrect

c

A and B are correct but C is incorrect

d

A and B are incorrect but C is correct

answer is D.

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Detailed Solution

As per n +l  rule, 2s>1S & 4P>3P . so, the correct answer is statement III only.

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