No, Ernest Rutherford's student James Chadwick wondered where all of this extra mass came from so in a experiment he discovered the neutrons.
Proton was discovered by E. Rutherford in 1917. Electron was discovered by J. J. Thompson in 1897. Neutron was discovered by J. Chadwick in 1932. All were of English origin.
Ernest Rutherford was the first scientist to propose that protons reside in the nucleus of an atom, based on his gold foil experiment in 1911. Neutrons were later discovered by James Chadwick in 1932.
James Chadwick discovered neutrons in 1932.
James Chadwick is the scientist credited with the discovery of neutrons in 1932. He conducted experiments that led to the identification of the neutron as a fundamental particle found in the nucleus of atoms.
The neutron was discovered by James Chadwick in 1932.
James Chadwick discovered the neutron in 1932.
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The British experimental physicist James Chadwick discovered the neutron in 1932.
James Chadwick discovered neutrons in 1932 during study of artificial radioactvity.
In 1932, James Chadwick discovered the neutron. Neutrons help stabilize the protons in the atom's nucleus. Because the nucleus is so tightly packed together, the positively charged protons would tend to repel each other normally. Neutrons help to reduce the repulsion between protons and stabilize the atom's nucleus. Neutrons always reside in the nucleus of atoms and they are about the same size as protons. However, neutrons do not have any electrical charge; they are electrically neutral.
There are 3 subatomic particles in an atom, electrons, protons, and neutrons. The first discovered was the electrons by J.J. Thomson in 1897. The second discovered was the protons by Ernest Rutherford in 1919. The third discovered was the neutrons by James Chadwick in 1932.
Neither J.J. Thomson nor Ernest Rutherford discovered the neutron. The neutron was discovered by James Chadwick in 1932 through experiments involving the interactions of neutrons with other atomic particles.