What is the maximum capacity of an atom of holding SHELL upto?

Hi Student,
There are infinite number of shells possible around nucleus of an atom but electrons are present only in those shells whose angular momentum number is integral multiple f h/2pi.
Now , there is no such limit of maximum shells around nucleus. Number of shells depend on the number of electrons present in the shells and also on the number of protons present in the nucleus to hold the shells or one can say that it depends on the atomic number of atom.