Question

Assertion (A): The mass of canal rays is about 2000 times as that of the neutron. Reason (R): Canal rays are positively charged radiations that consist of particles having charges equal in magnitude but opposite in sign to that of the electron. They are also known as Anode rays.

Match the names of the Scientists given in column A with their contributions towards the understanding of the atomic structure as given in column B (A) (B) (a) Ernest Rutherford (i) Indivisibility of atoms (b) J.J.Thomson (ii) Stationary orbits (c) Dalton (iii) Concept of nucleus (d) Neils Bohr (iv) Discovery of electrons (e) James Chadwick (v) Atomic number (f) E. Goldstein (vi) Neutron (g) Mosley (vii) Canal rays