Electron Structures

Bohr expanded on Rutherford's model of the atom by introducing which concept?

• The concept of electron orbits

• The discovery of the neutron

• The idea of a solid nucleus

• The uncertainty principle

Compare the energy of an electron in the ground state and an electron in the excited state.

• ground = less, excited = more

• ground = more, excited = less

• ground = equal, excited = equal

• ground = more, excited = more

When an electron falls from a higher energy level to a lower energy level, how is the energy released?

• In the form of light (photon)

• As sound waves

• As thermal energy

• As kinetic energy

The gaseous neon atoms in a neon sign emit light by:

• Absorbing photons and re-emitting them

• Colliding with electrons and getting excited

• Undergoing nuclear fusion

• Condensing into a liquid state

The seven colors of the visible light spectrum in order of increasing energy are (a)  

• ROYGBIV
• VIBGYOR
• RGB
• CMYK

What is the energy difference between a photon of yellow light and a photon of violet light?

• Yellow = less, Violet = more

• Yellow = more, Violet = less

• Yellow = equal, Violet = equal

• Yellow = more, Violet = more

Determine the type of radiation that has the longest wavelength, highest frequency, and greatest energy.

• a. Gamma rays have the longest wavelength.

• b. Infrared waves have the highest frequency.

• c. Radio waves have the greatest energy.

• d. Radio waves have the longest wavelength, gamma rays have the highest frequency, and gamma rays have the greatest energy.

Which of the following is the correct order of electromagnetic radiation types in terms of increasing wavelength, frequency, and energy?

• a. X-rays, ultraviolet light, microwaves, radio waves

• b. Radio waves, microwaves, ultraviolet light, x-rays

• c. Ultraviolet light, x-rays, radio waves, microwaves

• d. Microwaves, radio waves, x-rays, ultraviolet light

What is the wavelength of electromagnetic radiation that has a frequency of 5.00 x 10^12 s^-1? What kind of electromagnetic radiation is this?

• Infrared radiation with a wavelength of 60 micrometers

• Microwave radiation with a wavelength of 6 millimeters

• Ultraviolet radiation with a wavelength of 300 nanometers

• Visible light with a wavelength of 500 nanometers

The laser in a CD player uses light with a wavelength of 780 nm. What is the frequency of this light? (reminder: 1 nm = 10^-9 m)

• 3.84 x 10^14 Hz

• 4.29 x 10^14 Hz

• 3.85 x 10^14 Hz

• 3.84 x 10^15 Hz