Verified Answer :

Dalton was the first scientist to create an atomic theory but he wasn't given any credit. J.J Thompson was credited for his theory (apple pudding)

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Answer:

John Dalton

Explanation:

John Dalton was the first scientist to give the atomic theory. According to Dalton:

  • All substance is made up of atoms and atoms are indivisible.  
  • All atoms of an element have the same mass.  
  • A compound is formed by the combination of different atoms from different elements.
  • A chemical reaction is the rearrangement of atoms.  

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