Question

Define the following terms :
1)Atom 2) Isotope​

Answer 1

Answer:

atom is the simplest unit of any substance

isotopes are the elements having same atomic mass but different mass no

Explanation:

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Answer 2

Answer:

An atom is a particle of matter that uniquely defines achemical element

one of two or more forms of a chemical element that have different physical characteristics but the same chemical characteristics