Question

Why is helium gas used in the anode ray experiment?

Answer 1

An anode ray (also positive ray or canal ray) is a beam of positive ions that is created by certain types of gas-discharge tubes. They were first observed in Crookes tubes during experiments by the German scientist Eugen Goldstein, in 1886.[1] Later work on anode rays by Wilhelm Wien and J. J. Thomson led to the development of mass spectrometry.

Answer 2

To find out the nucleous and its properties. We discovered the electron early and wants to find out the property of something that catches all the electrons and put them together, so we used Anode rays and use of helium for bcz of its non reactive, inert behavior.