If P(r) is the radial probability density for a hydrogen atom then the probability that the separation of the electron and proton is between r and r+ dr is

If P(r) is the radial probability density for a hydrogen atom then the

1.	If P(r) is the radial probability density for a hydrogen atom then the probability that the separation of the electron and proton is between r and r+ dr is
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If P(r) is the radial probability density for a hydrogen atom then the probability that the separation of the electron and proton is between r and r+ dr is

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