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