Q.

Correct statement(s) among the following is/are

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a

The probability density of the electron in 1s orbital is maximum at the nucleus for hydrogen atom.

b

The radius of maximum probability of 2s orbital is closer to the nucleus than that of a 2p orbital. 

c

No two electrons in the same sub-shell can have all the four quantum numbers the same.

d

3dz2 orbital has two nodal planes.

answer is B, C.

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Correct statement(s) among the following is/are