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Which statement best describes the Modern Atomic Theory?
-Atoms are composed of protons located around a negative nucleus.
-Atoms are composed of electrons in energy levels around a positive nucleus.
-Atoms are composed of a nucleus made up of protons, neutrons, and electrons.
-An atom's mass is determined only by the mass of its neutrons.

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robertsaliyah40
Atoms are composed of a nucleus made up of protons, neutrons, and electrons.

Modern Atomic Theory states that atoms of one element are the same and that of the different atoms are different. Those atoms elements of the same number of photons.

  • The atomic theory is speculation that all things are accounted for by the combination of hard, small, and invisible particles.
  • Dalton gave the atomic theory and said atoms of elements are identical, where the difference of different sizes and masses. An atom nucleus consists of protons positively changed and has neutrons with no charge.

Hence the option A is correct.

Learn more about the statements best describes the Modern Atomic Theory.

brainly.com/question/14417603.

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