Question

For the following statements, write T for True and F for False.
(a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons.
(b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.
(c) The mass of an electron is about $\frac1{ 2000}$ times that of proton.
(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.

Answer 1

(a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons. ► False

(b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral. ► False

(c) The mass of an electron is about $\frac1{ 2000}$ times that of proton. ► True

(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine. ► False