Q14 of 37 Page 54

For the following statements, write T for true and F for false:

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

True.

Proton has a charge, equal in magnitude but opposite in sign to that of the electron. Its mass is considered to be approximately 2000 times as that of the electron.


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14

For the following statements, write T for true and F for false:

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

 14

For the following statements, write T for true and F for false:

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

 14

For the following statements, write T for true and F for false:

A radioactive isotope of iodine is used for making tincture iodine, which is used as a medicine.

 15

Rutherford's alpha-particle scattering experiment was responsible for the discovery of:

(a) Atomic nucleus (b) Electron


(c) Proton (d) Neutron