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 
times that of proton.
(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.
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 times that of proton.
(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.
(a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons. (F)
J.J. Thomson proposed the model of the atom that only contains electrons and protons and no neutrons.
Thus, the given statement is incorrect. Hence, the answer is False.
(b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral. (F)
The above statement is a false statement as a neutron is not formed by an electron and a proton combining together.
Also because the neutron is an independent subatomic particle. An atom consists of three subatomic particles.
These are protons that are positively charged, electrons that are negatively charged, and neutrons that are neutral in nature.
(c) The mass of an electron is about times that of the proton. (T)
(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine. (F)
A radioactive isotope of iodine is used for making tincture iodine, which is used as a medicine. Since the tincture of iodine is the combination of 5% - 7% of iodine, water, and alcohol. And the iodine used here is the ordinary iodine, that is, no radioactive isotope of iodine is present.
(a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons. (F)
J.J. Thomson proposed the model of the atom that only contains electrons and protons and no neutrons.
Thus, the given statement is incorrect. Hence, the answer is False.
(b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral. (F)
The above statement is a false statement as a neutron is not formed by an electron and a proton combining together.
Also because the neutron is an independent subatomic particle. An atom consists of three subatomic particles.
These are protons that are positively charged, electrons that are negatively charged, and neutrons that are neutral in nature.
(c) The mass of an electron is about times that of the proton. (T)
(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine. (F)
A radioactive isotope of iodine is used for making tincture iodine, which is used as a medicine. Since the tincture of iodine is the combination of 5% - 7% of iodine, water, and alcohol. And the iodine used here is the ordinary iodine, that is, no radioactive isotope of iodine is present.
