electrons entering the area Atom's nucleus

[Ajwrighter]

A while back I recall reading an article regarding artificially forcing electron particle waves into the surrounding nucleus of an Atom and that the result would shrink the size of the atom. Can an Atom hold more than the normal amount of electrons, if so is there a maximum?

[Borek]

Define "normal amount of electrons".

Some atoms can exist as negatively charged ions (like Cl-, S2-) - do they qualify?

But in general I have no idea what you writing about,

artificially forcing electron particle waves into the surrounding nucleus of an Atom

doesn't make sense to me.

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[chemisttree]

Google "neutron star".