Guess Who?

• -He proposed the "plum pudding" model of the atom.

• - He discovered electron.

• A. Ernest Rutherford

• B. Joseph John Thomson

• C. Aristotle

• D. Isaac Newton

He discovered the fundamental unit of charge for electron (1.602×10−19 C).

• A. Neil Armstrong

• B. Robert Millikan

• C. John Dalton

• C. James Chadwick

• - He conducted the gold foil experiment and discovered the nucleus, leading to the nuclear model of the atom.

• - He discovered proton.

• A. Robert Hooke

• B. Niels Bohr

• C. Ernest Rutherford

• D. Dmitri Mendeleev

• - His most significant contribution to Science is the Atomic Theory.

• 
  A. Ernest Rutherford

• C. John Dalton

• C. Joseph John Thomson

• D. John Newlands

He discovered neutron.

• A. Democritus

• B. Albert Einstein

• C. James Chadwick

• D. Robert Millikan