question_answer

(a) Write two differences between isobars and isotopes.    (b) Write uses of Co-60 and U-235.    

Answer:

 (a) Difference between isobars and isotopes

Isotopes	Isobars
These are the atoms of the same element having same atomic number but different mass numbers.	These are the atoms of the different elements having same mass number but different atomic numbers.
They have identical chemical properties and different physical properties.	They have different chemical properties and different physical properties because these are the atoms of different elements.

(b) (i) Isotope of cobalt (Co-60) is used in the treatment of cancer.                     (ii) Isotope of uranium (U-235) is used as a fuel in nuclear reactor.