Question

Name a gas which produces positive rays which only consists of protons.

Answer 1

Hydrogen gas (H₂) produces positive rays which only consists of protons.

• Atomic number of Hydrogen=1
• Therefore the number of electron= Number of protons= 1
• Mass number of Hydrogen= 1
• As Mass number= Number of protons + Number of neutrons
• Number of neutrons= 1-1= 0 i.e.; Hydrogen atoms only have an electron and a proton.

As electrons are knocked out of Hydrogen atoms in the discharge tube, positively charged ion of Hydrogen is produced that only consists of one proton. Therefore, Hydrogen gas (H₂) produces positive rays which only consists of protons.