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It was then changed to "All atoms of the same element contain the same number of protons and electrons, but atoms of a given element may have different numbers of neutrons." after James Chadwick discovered that the nuclei of most atoms contain neutrons as well as protons.

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What discovery contradict components of Daltons atomic theory?

These ideas are:· "All atoms of a given element are identical" : discovery of isotopes.· "A given compound always has the same relative numbers of types of atoms" : discovery of nonstoichiometric compounds.


How did the discovery of radioactivity contradict Dalton's atomic theory?

radioactivity proves that there are smaller particles in an atom that makes it up, they are proton, neutron, and electron. Dalton's atomic theory clearly states that the atom is the simplest particle. Radioactivity contradicts Dalton's theory since it proves that there are particles which are simpler than the atom.


Did the existence of isotopes affect the validity of the atomic theory?

Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass). Dalton's theory said that "atoms of the same element are the same as each other in terms of mass, color, and size." We know that this cannot be true because isotopes of the same element, oxygen for example O-16 and O-17, have different mass numbers (atomic mass).


Which is not part of John Dalton atomic theory?

Atoms are made up of smaller particles.


Which part of daltons atomic theory are known to be incorrect?

Dalton's atomic theory stated that atoms of a given element are identical in all respects, which we now know is incorrect as atoms can exist as isotopes with different numbers of neutrons. Additionally, atoms were thought to be indivisible, but we now know they can be broken down into subatomic particles like protons, neutrons, and electrons.

Related Questions

What part of daltons theory was modified after discovery of isotopes?

Atoms may not be changed into other atoms.


What discovery contradict components of Daltons atomic theory?

These ideas are:· "All atoms of a given element are identical" : discovery of isotopes.· "A given compound always has the same relative numbers of types of atoms" : discovery of nonstoichiometric compounds.


Does the existence of isotopes contradict part of Dalton's original of atomic theory?

Yes.


What part of daltons theory was modified after the discovery of isotope?

Atoms may not be changed into other atoms.


A sentence with the word contradict?

1.I had no evidence to contradict the theory.2.I didn't have any evidence that i could use to contradict the theory.


Which discovery could provide evidence against the theory of evolution?

A discovery that shows species appearing suddenly in the fossil record without any preceding ancestors would provide evidence against the theory of evolution. This would contradict the gradual changes in species predicted by evolution.


How did the discovery of radioactivity contradict Dalton's atomic theory?

radioactivity proves that there are smaller particles in an atom that makes it up, they are proton, neutron, and electron. Dalton's atomic theory clearly states that the atom is the simplest particle. Radioactivity contradicts Dalton's theory since it proves that there are particles which are simpler than the atom.


How does Daltons atomic theory explain the law of definite proportions?

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How did Bohr reduced mass theory assisted by Urey to discover deuterium?

Bohr's reduced mass theory predicted the existence of isotopes. Urey used this theory to isolate the heavy isotope of hydrogen, deuterium, by separating it from normal hydrogen using fractional distillation. This discovery confirmed the existence of isotopes and provided evidence for the theory of nuclear structure.


What part of daltons atomic theory was proved incorrect?

One part of Dalton's atomic theory that was proved incorrect is the assumption that atoms are indivisible and cannot be further subdivided. The discovery of subatomic particles such as protons, neutrons, and electrons showed that atoms are made up of smaller components.


Why scientists accepted daltons atomic theory but not the idea of an atom proposed by the Greek philosopher?

the Greek Philosophers did not test their theory.


How did subatomic particles and isotopes affect the atomic theory?

The discovery of subatomic particles like electrons, protons, and neutrons contributed to a better understanding of the structure of atoms. Isotopes, which are atoms of the same element with different numbers of neutrons, helped refine the atomic theory by explaining variations in atomic mass. Together, these discoveries have shaped our modern understanding of atomic structure and behavior.