Question

Discovery of proton?

Answer 1

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.

Answer 2

Answer:

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

The discovery of the proton is credited to Ernest Rutherford, who proved that the nucleus of the hydrogen atom (i.e. a proton) is present in the nuclei of all other atoms in the year 1917.

Based on the conclusions drawn from the gold-foil experiment, Rutherford is also credited with the discovery of the atomic nucleus.

Ernest Rutherford observed that his scintillation detectors detected hydrogen nuclei when a beam of alpha particles was shot into the air.

After investigating further, Rutherford found that these hydrogen nuclei were produced from the nitrogen atoms present in the atmosphere.

He then proceeded to fire beams of alpha particles into pure nitrogen gas and observed that a greater number of hydrogen nuclei were produced.

He concluded that the hydrogen nuclei originated from the nitrogen atom, proving that the hydrogen nucleus was a part of all other atoms.

This experiment was the first to report a nuclear reaction, given by the equation: 14N + α → 17O + p [Where α is an alpha particle which contains two protons and two neutrons, and ‘p’ is a proton]

The hydrogen nucleus was later named ‘proton’ and recognized as one of the building blocks of the atomic nucleus.