. Assuming the atom and the nucleus
to be spherical,
(a) What will be the ratio of their sizes?
(b) If atom is represented by planet earth
m, estimate the size of the nucleus.
Answer:
(i) Sample A has more protons than the electrons. Hence,
it is a cation.
(ii) Sample B and C have same mass number but different
atomic numbers. Hence, they are a pair of isobars,
(iii) Samples C and D have same atomic number but different mass numbers.
Hence, they are a pair of isotopes,
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