
a. what is the density of the nucleus. what
We have been given the density of an atom. So let's say it is if mass m. Now it is given that almost all of the mass m is in the nucleus of the atom, but it's radius is 10-5 time that of the atom.
The concept to solve this question is finding density of the nucleus, assuming that the whole mass m is in the nucleus, using proportionality as below.

Ans: 1018 kg/m3
Hope this helps.
a. what is the density of the nucleus. what (2006) Problem 2: There is relatively little...
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