I. All matters are made of very tiny particles. II. Atoms of different elements have different masses and chemical properties. III. The relative number of atoms is variable in any compound.

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Combined Graduate Level Examination (CGLE) is a national-level examination conducted by SSC to recruit suitable candidates for different Group B and Group C posts under Government of India.

I. All matters are made of very tiny particles. II. Atoms of different elements have different masses and chemical properties. III. The relative number of atoms is variable in any compound.