The correct statement about probability density (except at infinite distance from nucleus) is :

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It can be zero for 3p orbital

It can never be zero for 2s orbital

It can be zero for 1s orbital

It can be negative for 2p orbital

answer is C.

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Detailed Solution

Probality density changes with distance (radius) from nucleus. It becomes zero at radial nodes.

In 2s graph, the probability density curve becomes zero at a point which is know as node. Hence, potion (a) is wrong.

Probability density is the square of wave function and hence is always positive . So, option (b) is wrong.

In 3p graph, we have a minimum curve which denotes the node where probability density is zero. Hence, option (C) is the correct statement.

In 1s graph, the probability density curve does not become zero at any distance hence, option (d) is wrong.

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