rford's Atomic Model.b) 1: Almost all particles passed through the foil un-deflected.2: Out of 20000 particles,only a few were deflected at fairly large angles.3: A few bounced back on hitting the gold foil.c)1: Since most of the particle passed through the foil ,therefore most of the volume occupied by an atom is empty.2: The deflection of a few particles proved that there is a ' center of positive charges' in an atom, which is called ' NUCLEUS' of an atom.3: The complete rebounce of a few particle SHOW that the nucleus is very dense and hard.4: Since a few particle were deflected it shows that the size of the nucleus is very small as compared to the volume of an atom.5:The electron revolve around the nucleus.6: An atom as a whole is NEUTRAL, therefore the number of electrons in an atom is EQUAL to the number of protons.7: Except electrons,all other fundamental particles that lie within a nucleus are known as nucleons.d)1: According to classicle theory,electrons being the charged particles should release or emit energy continously and they should ultimately fall into the nucleus.2: If the electrons emit continously,they should forma CONTINOUS spectrum but in fact,line spectrum was observed.I Hope You Understand.