Cathode rays are made up of

Which of the following sub-atomic particles is not considered a fundamental constituent of a standard atom?

Which of the following is the correct statement for an electron?

How did Chadwick discover the neutron? Explain.

State whether the following statements are true or false:
$(i)$ Faraday's electrolysis experiments and cathode ray discharge tube experiments prove that protons are located in the nucleus of the atom,while electrons are located outside the nucleus.
$(ii)$ In the year $1887$,Goldstein discovered the proton.
$(iii)$ In the year $1932$,the neutron was discovered by Chadwick.
$(iv)$ The first atomic model was proposed by Thomson.

Who discovered the neutron?