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  • What information do you get from the figure about the atomic number, mass number and valency of atoms X, Y and Z? Give your answer in a tabular form.

What information do you get from the figure about the atomic number, mass number and valency of atoms X, Y and Z? Give your answer in a tabular form.

 

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The atomic number, mass number, and valency of the atoms X, Y, and Z are given in the table below:-

  Atomic number Mass number Valency
X 5 11 3
Y 8 18 2
Z 15 31 3,5

The atomic number of an atom is the number of protons in its nucleus, while the mass number is the number of protons plus the number of neutrons in its nucleus. The mass number is represented in atomic mass units. 

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