Which part of an atom was discovered by Rutherford’s alpha particle scattering experiment?

How many times is a proton heavier than an electron?

Name the gas which produces anode rays consisting of protons in the discharge tube experiment.

What is the positive charge on the nucleus of an atom due to?

State the number of electrons present in the outermost shell of the atom of the following elements:

(i) Neon (ii) Chlorine