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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 1/2000 times that of proton.(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.
