Q. 2 D4.1( 7 Votes )

Give reasons.

All the mass of an atom is concentrated in the nucleus.

Answer :

All the mass of an atom is concentrated in the nucleus:

i. In the Rutherford’s model, since most of the alpha rays went straight and pass through the gold sheet.


ii. This means that there must be a very large empty space within the atom.


iii. The positively charged heavy mass which occupies only a small volume in an atom is called nucleus. It is supposed to be present at the center of the atom.


iv. Thus, most of the mass of the atom is concentrated in the nucleus.


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