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ICSE Class 9 Chemistry Question 11 of 39

Atomic Structure and Chemical Bonding — Question 19

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Question

Question 5

In what respect do the three isotopes of hydrogen differ ? Give their structures.

Answer

Hydrogen has three isotopes i.e., namely protium (11H), deuterium (21H) and tritium (31H) each having the same atomic number i.e., 1 but different mass numbers i.e., 1, 2 and 3 respectively.

Hence, all three have same number of electrons and protons whereas number of neutrons are 0, 1 and 2 respectively.

Isotopes of Hydrogen

In what respect do the three isotopes of hydrogen differ? Give their structures. Atomic Structure, Concise Chemistry Solutions ICSE Class 9