Question

explain with examples 1)Monoatomic molecule 2)Diatomic Molecule 3) Triatomic Molecule 4) Polyatomic Molecule ​

Answer 1

Answer:

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1) In physics and chemistry, "monatomic" is a combination of the words "mono" and "atomic", and means "single atom". It is usually applied to gases: a monatomic gas is one in which atoms are not bound to each other.

eg ::-helium (He),neon, (Ne)argon(Ar),krypton (Kr)

2)Diatomic molecules are molecules composed of only two atoms, of the same or different chemical elements. . If a diatomic molecule consists of two atoms of the same element,

eg ::- such as hydrogen (H2) or oxygen (O2), then it is said to be homonuclear.

3)Triatomic molecules are molecules composed of three atoms, of either the same or different chemical elements. Eg::- include H₂O, CO₂ and HCN.

4)Polyatomic molecules are electrically neutral groups of three or more atoms held together by covalent bonds. Molecules are distinguished from ions by their lack of electrical charge.

eg::-oxygen (O2), nitrogen (N2),

Explanation:

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Answer 2

★ Monoatomic Molecule: Those elements which can exist in free firm.in nature i.e., they do not need to combine with other atoms to become stable. Example: Ag, Au, Pt, etc.

★ Diatomic Molecule: Those molecules which are made up of 2 atoms are called diatomic molecules

Example: O2, H2, Cl2, etc

★ Triatomic Molecule: Those molecules which are made up of 3 atoms are called triatomic molecules.

Example: O3, H2O, HCN, etc.

★ Polyatomic Molecules: Those molecules which are made up of more than 3 atoms.

Examples: S8, PCl5, HNO3, etc.