Answer is:
J.J. Thomson- B) Plum Pudding Model.
J. J. Thomson discovered the electron in 1897.
His "plum pudding" model (1904) suggested: the electrons are embedded in the positive charge.
John Dalton - C) Atoms indivisible.
Dalton stated that atom is matter that can not be divided
Ernest Rutherford - A) Positively charged nucleus.
According to Rutherford model of the atom:
1) Atoms have their charge concentrated in a very small nucleus.
2) Major space in an atom is empty.
3) Atoms nucleus is surrounded by negatively charged particles called electrons.
4) An atom is electrically neutral.
James Chadwick - D) Discovery of neutrons.
James Chadwick was a British physicist who was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron in 1932.
