Question

(a) Differentiate between isotope and isobar. Give one example of each (5)

(b) Write any three important application of isotopes?​

Answer 1

Answer:

a) Isobars are those elements which have a different atomic number but the same mass number. Isotopes are the atoms in which the number of neutrons differs and the number of protons is the same. Isotopes are those elements having the same atomic number and different mass number.

b) Isotopes of iodine are used for radiotherapy in treatment of hyperthyroidism, cancer, etc. 2) Uranium, Radium, Polonium isotopes are used in atomic reactors. 3) Cobalt isotopes are used for irradiation of food products.21-Jan-2017

Answer 2

(A) Isobar is that element which differs in the chemical property but has the same physical property. Isobars are those elements which have a different atomic number but the same mass number.

Isotopes are the atoms in which the number of neutrons differs and the number of protons is the same. Isotopes are those elements having the same atomic number and different mass number. The main difference between the Isobars and Isotopes are tabulated below.

(B) 1) Isotopes of iodine are used for radiotherapy in treatment of hyperthyroidism, cancer, etc. 2) Uranium, Radium, Polonium isotopes are used in atomic reactors. 3) Cobalt isotopes are used for irradiation of food products.


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