Question

(b) Name the sub-atomic particle in which isotopes of an element differ
from each other.
(c) Is the atomic mass number of isotopes same or different? Justify your
answer.
(d) Deduce the proton number of the isotope C-14.
(e) Write any one use of the radioactive isotope C-14.
​

Answer 1

b) neutrons

c) different as they contain different no. of neutrons

d) atomic no. is 6

therefore, proton no. is also 6

e) isotope c-14 is used in carbon dating

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