Question

what are molecules? Explain​

Answer 1

Answer:

Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

Answer 2

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• Molecules are the smallest particles of any substance.
• A molecule is formed when two or more atoms of the same different types of elements combine in a fixed ratio.
• It is responsible for all physical and chemical properties of that particular substance.
• Atoms in a molecules are held together with two types of bonds : ionic bond and covalent bond.

Molecules are of three types :-

1. Monoatomic – It is Composed of particle with single atom. there are no chemical bonds between particles. Monu atomic species except noble gases are not that stable.
2. Diatomic – It is composed of molecules with two atoms. there are ionic and covalent bond between two atoms. Diatomic compounds are stable.
3. Polyatomic – It is composed of several ions per atom. there are covalent and co-ordinate bonds. formed by bonding several atoms together.