Question

1.
What is the smallest particle of an element ? Write the formula of an oxygen molecule.
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Answer 1

Answer:

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atomAn atom is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton's Atomic Theory: 1. All matter is composed of atoms, and atoms are indivisible and indestructible.

Answer 2

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→ Atom

→ Formula of an Oxygen Molecule = O2

Molecular oxygen (O2) is a diatomic molecule that is composed of two oxygen atoms held together by a covalent bond.