Question

Why Hydrogen ions is know as Proton???​

Answer 1

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A hydrogen ion is called a proton because hydrogen atoms which have only one electron lose that one electron to become an ion leaving only one.

Answer 2

The hydrogen nucleus is made up of a particle carrying a unit positive electric charge, called a proton. ... Because the bare nucleus can readily combine with other particles (electrons, atoms, and molecules), the isolated hydrogen ion can exist only in a nearly particle-free space (high vacuum) and in the gaseous state.