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. [[1]]
(b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral. [[2]]
(c) The mass of an electron is about 1/2000 times that of a proton. [[3]]
(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine. [[4]]

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Detailed Solution

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

Thomson explains the positive part (nucleus) and negative part (electrons) of an atom.

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