Question

Discovery of proton and study of canal Rays​

Answer 1

Answer:

Protons are subatomic particles that, with neutrons and electrons, are the principal constituents of atoms.

Protons are positively charged particles that reside in the nucleus of an atom. These protons add the overall positive charge of a molecule. The mass of the proton is 1.6727g x 10 raised to -24, the electron 9.110g x 10 raised to -28.

Through scientific discovery, protons have been accepted as the particle that contributes to the positive charge of an atom. The discovery of protons can be attributed to Rutherford.

In 1886 Goldstein discovered existence of positively charged rays in the discharge tube by using perforated cathode. These rays were named as anode rays or cannal rays.

In 1899, Rutherford discovered alpha and beta ‘rays’ from uranium. He later demonstrated that alpha rays are the nuclei of helium atoms. He discovered in 1914 that the nucleus of an atom constituted and extremely dense but small fraction of the volume of an atom and that this nucleus was positive in charge.

Answer 2

Answer:

DISCOVERY OF PROTON

• The property of cathode ray similar of anode.
• It is done by E.Goldstein.
• The e/m ratio of cathode ray depends on the nature of gas and he concluded that anode rays is produce due to the ionisation of gas.
• On taking hydrogen on vacuum tube the positive particle anode ray are produce called proton.
• Proton is 1837 times heavier than electron.
• Proton is discovered by E.Goldstein.

CANAL RAYS

• It is also called anode rays or positive rays.
• It travels in straight line.
• These rays are formed by small - small particles .
• These particles have positive charge.