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ICSE Class 9 Chemistry Question 16 of 39

Atomic Structure and Chemical Bonding — Question 28

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Question

Question 14

What are isotopes? With reference to which fundamental particle do isotopes differ ? Give two uses of isotopes.

Answer

Isotopes are atoms of the same element having same atomic number but different mass number.

For example : 2412Mg and 2612Mg

Isotopes differ in the number of neutrons.

Uses of isotopes

  1. Radioactive isotopes are used in industry to detect the leakage in underground oil pipelines, gas pipelines and water pipelines.
  2. An isotope of Uranium 23592U is used as a fuel in nuclear reactors.