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Our understanding of the atom has changed over time. Which idea that was once accepted is now considered scientifically inaccurate?

AThe nucleus is the center of the atom.
BAn atom is solid material.
CElectrons have a negative charge.
DElectrons are arranged in layers.

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taskmasters

I think the correct answer among the choices presented above is option B. The idea that was once accepted is now considered scientifically inaccurate is that an atom is a solid material. This is because now an atom is seen as a particle that has electrons orbiting around a nucleus. It has more like a cloud-like structure.

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