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:
Neutron
Stationary orbits
Canal rays
Indivisibility of atoms
Atomic number
Concept of nucleus
Discovery of electrons