Millikan found the charge of an electron by his famous oil drop experiment.
J J Thomson determined the specific charge of the electron. That means the ratio of the charge of an electron to its mass.
With these two values one can find the mass of electron by dividing the charge value by its specific charge.
J.J. Thomson discovered the electron by conducting the Cathode Ray Experiment.
J J Thomson determined the ratio of the charge of an electron to its mass.
jj.thamson
not necessarily it has the smallest charge
No, protons have positive charge, electrons have negative charge and neutrons have no charge
Electrons have a negative charge. When an element had more electrons than protons, it tends to have a negative charge.
All electrons in an atom have: * a negative one charge * 1/2 spin * 0.511 MeV of mass
In a series of experiments in the 1890's, J.J.Thompson showed that cathode rays, or electrons, are deflected by an electric field, they are bent by a magnetic field, and that their charge to mass ratio is about 1/2000th of that of the proton. Light does not have any of these properties.
Since electrons were particles, it was obvious that they had some mass.Ever since electrons were discovered, there was curiosity to find the magnitude of their charge and mass. Millikan performed the famous oil-drop experiment and found out the charge of electrons .After that he equated it with the charge to mass ratio of electron and found out the mas of the electron.
J.J. Thompson discovered that cathode rays were made up of electrons, and determined the mass-to-charge ratio of the electrons. He found that the mass-to-charge ratio of the cathode rays was much smaller than that of hydrogen, and concluded that constituent particles (electrons) must be the building blocks of atoms. He modeled the neutral atom as a sphere of negatively charged electrons distributed amongst positively charged protons. This is known as the "plum pudding" model or the Thompson model of the electron.Ernest Rutherford proved that the Thompson model was incorrect when he discovered that gold atoms consist of an outside layer of electrons, with a center nucleus densely packed with protons.
The neutron has no charge, therefore the charge to mass ratio for the neutron is zero.
It is a simple ratio charge/mass or e/m .
Compared to the (charge/mass) ratio of the electron:-- The (charge/mass) ratio of the proton is much smaller; although the proton charge is equal to the electron charge, the proton mass is much larger, by a factor of more than 1,800.-- The (charge/mass) ratio of the neutron is zero, because the neutron charge is zero.
The charge and mass ratio of proton is constant, the positive particles found during discharge tube experiment are nuclei of atoms which have different charge and mass ratio.
Modern Mass Spectrometry is the alternative method to measure the charge to mass ratio of an electron.
Protons and electrons have mass and charge.
Pprotons have a positive charge neutrons have no charge and electrons have a negative charge. However the one with the smallest mass is electrons.
J.J. Thompson discovered that cathode rays were made up of electrons, and determined the mass-to-charge ratio of the electrons. He found that the mass-to-charge ratio of the cathode rays was much smaller than that of hydrogen, and concluded that constituent particles (electrons) must be the building blocks of atoms. He modeled the neutral atom as a sphere of negatively charged electrons distributed amongst positively charged protons. This is known as the "plum pudding" model or the Thompson model of the electron.Ernest Rutherford proved that the Thompson model was incorrect when he discovered that gold atoms consist of an outside layer of electrons, with a center nucleus densely packed with protons.
Cathode rays are negatively-charged particles.
There is no such thing as an electrical atom? Aluminum is an element. Electrons are in every element. They carry a small mass and have an negative charge.