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

A. The nucleus is the center of the atom.
B. An atom is solid material.
C. Electrons have a negative charge.
D. Electrons are arranged in layers.

The correct answer to the question is : B) An atom is a solid material. ;

Answered by SerenaBochenek | 2024-06-11

The idea that an atom is solid material is now considered scientifically inaccurate. Advances in atomic theory, particularly through Rutherford's gold foil experiment, demonstrated that atoms are mostly empty space with a dense nucleus at the center. This fundamentally changed the model of the atom from a solid structure to one of empty space and subatomic particles.
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Answered by SerenaBochenek | 2024-12-26