Question

all the Mass of an atom is concentrated in nucleus .give scientific reason.

Answer 1

The only sub particles in an atom that have measurable amount of mass are protons and neutrons.. Since, protons and neutrons are centralised only in the nucleus of an atom, their mass is also in the same way..

Answer 2

yes this is true because it is experimented by alpha particle scattirng which shows ..where in this experiment alpha particle gets deflected by 180 degree from gold foil


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