The presence of electrons outside the nucleus and nucleus at the centre of the atom was suggested by:
A. Electrons by J.J. Thomson and nucleus by E. Goldstein
B. Electrons by J. Chadwick and nucleus by E. Rutherford
C. Electrons by J.J. Thomson and nucleus by E. Rutherford
D. Electrons by E. Rutherford and nucleus by J.J. Thomson