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## Homework Statement

The probability of finding a 1s electron in a region between r and r+dr is:

probability = [tex] (4/a^3_o) r^2 e^{-2r/a_o} dr [/tex]

1. work out the probability that an electron would be found in a sphere of radius [tex]a_o[/tex]

## Homework Equations

I know to find the probabilty you work out [tex]\int|\psi|^2 dr[/tex] but because the probability is already given what do i do?

The probability is given in a region between r and r+dr so i guess I somehow work it out over 360 degress?

Thanks

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