Who said atoms of the same element are exactly alike?

Understand the Problem

The question is asking for the attribution of the statement regarding the similarities of atoms of the same element. This relates to atomic theory in chemistry.

More Information

John Dalton proposed that all atoms of the same element are identical in size, mass, and other properties. This was a fundamental part of his atomic theory introduced in the early 19th century.

Tips

Common mistakes include confusing Dalton's theory with modern atomic theory, which acknowledges the existence of isotopes.

Sources

• The web page with info on - Oxford Reference - oxfordreference.com
• 4.6: Dalton's Atomic Theory - Chemistry LibreTexts - chem.libretexts.org
• Dalton assumed that all atoms of same element are identical ... - Quora - quora.com