Match each scientist with the correct scientific contribution to atomic theory.

Niels Bohr

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Atoms contain negatively charged particles.
Electrons belong to certain energy levels.
The nucleus contains the positive charge of an atom.
Elements are made up of atoms.
Ernest Rutherford

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Atoms contain negatively charged particles.
Electrons belong to certain energy levels.
The nucleus contains the positive charge of an atom.
Elements are made up of atoms.
J. J. Thomson

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Atoms contain negatively charged particles.
Electrons belong to certain energy levels.
The nucleus contains the positive charge of an atom.
Elements are made up of atoms.
John Dalton

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