In the early 1800s, who discovered that each chemical elemen

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In the early 1800s, who discovered that each chemical element is made up of a unique type of atom and that atoms differ by their mass?

[SSC CGL 24 July 2023 Shift 1 With Answers]

A

Antoine Lavoisier

B

John Dalton

C

Robert Boyle

D

Amedeo Avogadro

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