Atomic Theory

Who proposed the first experimental model of the atom?

• John Dalton

• Democritus

• Ernest Rutherford

• J.J. Thomson

Which scientist discovered the electron using a cathode ray tube?

• John Dalton

• Democritus

• Ernest Rutherford

• J.J. Thomson

Which Scientist proposed the nuclear model of the atom?

• John Dalton

• Democritus

• Ernest Rutherford

• J.J. Thomson

Which scientist proposed the Plum pudding model of the atom?

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Neils Bohr

Which scientist carried out the gold foil experiment?

• John Dalton

• J.J. Thomson

• Ernest Rutherford

• Neils Bohr

Which scientist based his model of the atom on the line spectra for Hydrogen?

• J.J Thomson

• Niels Bohr

• Ernest Rutherford

• Louis DeBroglie

A region in space where there is a high probability of finding an electron is a(n)_____

• nucleus

• energy level

• orbital

• sublevel

The number of protons in the nucleus

• Atomic number

• mass number

• always equal to the number of electrons

• atomic mass

This scientist proposed the idea of matter waves. That is matter has wave nature as well as a particle nature

• John Dalton

• Louis de Broglie

• Neils Bohr

• Heisenberg

This scientist discovered the neutron.

• Ernest Rutherford

• Louis de Broglie

• J.J. Thomson

• James Chadwick