Which statement about the root-mean-square (rms) charge radius of a nucleus is correct?

Question

Accepted Answer

It is the square root of the mean squared distance of the nuclear charge distribution from its centre.

Answer

It is the maximum distance from the nuclear centre at which protons can be found.

Answer

It is the average distance of the protons from the nuclear centre.

Answer

It is the distance from the nuclear centre at which the charge density falls to half its central value.

Answer

I choose not to answer.

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