For the following statements, write T for True and F for False Question 14 from Chapter 4. Structure Of The Atom

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

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

(c) The mass of an electron is about 1/ 2000 times that of proton.(T)

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

This is an answered question from Chapter 4. Structure Of The Atom of CBSE Class 9th Science

Check for Complete Exercise Solution for Chapter 4. Structure Of The Atom | CBSE Class 9th Science