Structure of The Atom

Structure of the atom Worksheet-10

1. J.J. Thomson proposed that the nucleus of an atom contains only nucleons.

2. A neutron is formed by an electron and proton combining together. Therefore, it is neutral.

3. The mass of an electron is about 1/2000 times that of proton.

4. An isotope of iodine is used for making tincture of iodine, which is used as medicine.

5. Alpha particles have twice the mass as that of protons.

6. The atom as a whole is electrically neutral.