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Q.

A and Z can have values

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a

zero

b

fractional

c

whole number

d

negative

answer is D.

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Detailed Solution

  • An atom is characterised by the number of protons in it and this number is called atomic number “Z”. 
  • The total number of protons and neutrons, also called “Nucleons”, is called mass number “A”. 
  • 'A' and 'Z' have always whole number values. 
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