Atomic number, mass number and isotopes — task. Chemistry CBSE Live product, Class 9.

Select the correct answer:

1. In the notation of the symbol

{}_{Z}^{A}X

, if Z = 10 and A = 20. Find the number of neutrons in the atom.

2. Carbon exists in two stable isotopic forms. Why do both isotopes show identical chemical behavior in forming compounds?

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1. Atomic number, mass number and isotopes