Emission Spectra and the Bohr Model of Atomic Structure

The video explores the emission spectra of atoms and the Bohr model, which introduced the concept of quantized electron energy levels. Emission spectra, unique to each element, helped develop the Bohr model by showing that electrons exist in specific orbits. The Rydberg equation predicted hydrogen's emission lines, but classical physics couldn't explain the observed line spectra. Bohr proposed that electrons occupy fixed orbits and transition between them by absorbing or emitting energy. The video concludes by acknowledging the Bohr model's role in advancing atomic theory, leading to modern quantum mechanics.

What was the groundbreaking suggestion made by the Bohr model regarding electron energy levels?

• Electron energy levels are quantized.

• Electrons do not have energy levels.

• Electron energy levels are continuous.

• Electrons can have any energy level.

What happens when atoms absorb energy in the form of heat, light, or electricity?

• They emit energy as light.

• They emit energy as sound.

• They become stable.

• They absorb more energy.

How is the emission spectrum of an element similar to a fingerprint?

• It is unique to each element.

• It is the same for all elements.

• It changes with temperature.

• It is visible only under a microscope.

According to classical physics, what kind of spectrum should an atom emit?

• A line spectrum

• A continuous white light spectrum

• A spectrum with no lines

• A spectrum with only dark spots

What did Johann Rydberg's equation predict?

• The speed of light

• The mass of an electron

• The wavelengths of light emitted by a hydrogen atom

• The energy levels of electrons

In Bohr's model, when does an electron emit energy?

• When it jumps to a lower energy orbit

• When it stays in the same orbit

• When it jumps to a higher energy orbit

• When it absorbs a photon

What is the relationship between the energy of a transition and the wavelength of emitted light?

• As energy increases, wavelength increases.

• Energy and wavelength are unrelated.

• Energy and wavelength are always equal.

• As energy increases, wavelength decreases.

What is emitted when an electron transitions to a lower energy orbit?

• A neutron

• A proton

• A photon

• An electron

What is the limitation of the Bohr model mentioned in the video?

• It does not explain electron mass.

• It predicts continuous spectra.

• It only applies to helium atoms.

• It does not account for electron wave behavior.

What eventually replaced the Bohr model?

• Classical physics

• Newtonian mechanics

• Quantum mechanical theory

• General relativity