Science
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 a proton. (d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.
Related Questions
If Z=3, what would be the valency of the element? Also, name the element.
Composition of the nuclei of two atomic species, X and Y, are given as under
X Y Protons = 6 6 Neutrons = 6 8 Give the mass numbers of X and Y. What is the relation between the two species?
Rutherford's alpha–particle scattering experiment was responsible for the discovery of
- Atomic nucleus
- Electron
- Proton
- Neutron
Isotopes of an element have
- The same physical properties
- Different chemical properties
- Different number of neutrons
- Different atomic numbers