Atomic Structure Quiz

According to Aristole's postulation, all matters are composed of which four components?

• Metal, Wood, Water, Fire

• Earth, Wind, Water, Fire

• Water, Air, Dust, Fire

• Rock, Air, Sand, Heat

Who gave the first definition of an element as a pure simple substance that cannot be changed to simpler forms by traditional chemical methods?

• Rutherford

• Boyle

• Geiger

• Aristotle

In 1897, it was known that gases do not conduct electricity under normal conditions of pressure and temperature. At what pressure range and potential difference could gases conduct electricity in a discharge tube?

• 0.1-0.01 mmHg, 5000 volts

• 0.001-0.0001 mmHg, 20000 volts

• 0.5-0.05 mmHg, 15000 volts

• 0.01-0.001 mmHg, 10000 volts

Who performed the famous laboratory experiment where alpha particles were allowed to collide with a metal sheet covered with zinc sulfide?

• Mersden

• Rutherford

• Bohr

• Geiger

What is the fundamental constituent of all matter according to Rutherford?

• Electrons

• Cathode Rays

• Neutrons

• Protons

Who solved the puzzle of the atomic structure in 1913 and deserved the Nobel Prize in 1922?

• Heisenberg

• Schrodinger

• Bohr

• Rutherford

What does Hund's rule state about electron pairing in a given sublevel?

• Electrons pair up immediately

• Electrons pair up only in the p sublevel

• Electrons pair up only in the s sublevel

• No electron pairing until each orbit contains one electron

How many quantum numbers are there that define the volume of space where electrons are found?

• Five

• Four

• Three

• Two

Who introduced the idea of quantized energy to detect energy of electrons in energy levels?

• Heisenberg

• Schrodinger

• Bohr

• Rutherford

What is the difference between the ground state and excited state of an electron according to quantum mechanics?

• Ground state has higher energy, Excited state has lower energy

• Ground state has lower energy, Excited state has higher energy

• Ground state is stable, Excited state is unstable

• Ground state is dynamic, Excited state is stationary