Question

Define the terms: Monoatomic Diatomic Tetra-atomic Poly-atomic

Answer 1

Molecule consisting of one atom of an element is called mono atomic (He). Molecule consisting 2 atoms are called di atomic (O2). Molecule consisting 4 atoms are called tetra atomic(P4). Molecule consisting of more than 4 atoms are called poly atomic (S8).

Answer 2

These r differentiated on the basis of atomicity of molecules
Monoatomic
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molecules having atomicity (no.of atoms by which a molecule is constituted)=1

Diatomic
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atomicity =2

Tetraatomic
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atomicity =3

polyatomic
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atomicity =more than 3