Question

Give scientific reasons.
a. All the mass of an atom is concentrated
in the nucleus.
b. Atom is electrically neutral.
c. Atomic mass number is a whole number.
d. Atoms are stable though negatively
charged electron are revolving within it.
Define the following terms
a. Atom b. Isotope c. Atomic number
d. Atomic mass number e. Moderator in
nuclear reactor
# Draw a neat labelled diagram.
Ruthrford's att​

Answer 1

Answer:

a.

Explanation:

all the mass of the atom is concentrated in the nucleus because mass of electron is negligible so mass of proton and neutron are taken into consideration.