HYDROGEN

 

            Isotopes of Hydrogen

 

ISOTOPES

    Nuclei of the same element having same atomic number but different mass number are known as     isotopes.

    OR

    Nuclei of same element having same number of proton but different number of neutron are knows     as isotopes.

    Example

  • 17Cl35 , 17Cl37
  • 6C12 , 6C13

ISOTOPES OF HYDROGEN

    There are three isotopes of hydrogen.

    • Protium
    • Deuterium
    • Tritium

    Protium

    Ordinary hydrogen is knows as protium .

  • It has one electron ,one proton but it has no neutron.
  • Mass number : 1
  • Charge number : 1
  • Symbol : 1H1

    Percentage in natural hydrogen

    99.98%

    Structure

    Deuterium

Heavy hydrogen is known as deuterium.

  • It has one electron one proton and one neutron.
  • Mass number: 2
  • Charge number: 1
  • Symbol: 1H2 or D

    Percentage In Natural Hydrogen

    0.0156%

    Ratio

    Protium:Deturium =1:15000

    Structure

Heavy water(D2O) consists of deuterium isotope of hydrogen.

    TRITIUM
  • It has one electron, one proton and two neutrons.
  • Mass number : 3
  • Charge number : 1
  • Symbol : 1H3 or 1T3

    Percentage in natural hydrogen

    4 X 10-15 %

  1. It is a radioactive isotope.
  2. It emits B-rays.
  3. It has a half life of 12.5 years.
  4. It is present in traces.

    Structure

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