What is an atom and molecule? What is the order of magnitude of mass o – InterviewSolution

1.	What is an atom and molecule? What is the order of magnitude of mass of one atom? What are isotopes?
Answer» The smallest indivisible particle of an element is called an atom. A molecule is an aggregate of two or more atoms of definite composition which are held together by chemical bonds. Every atom of an element has definite mass. The order of magnitude of mass of one atom is 10^-27kg. Isotopes are the atoms of the same element having same atomic number but different mass number.

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