Emission Spectra

Which experimental results support the theory that electrons exist in discrete energy levels?

• H NMR

• X-Ray diffraction patterns

• Emission spectra

• Infrared spectra

What causes an electron to leave its ground state and jump to an excited state?

• Absorption of a photon

• emission of a photon

• absorption of an electron

• Emission of an electron

A transition from a higher energy level into n=1 emits what type of light?

• UV Radiation

• Infrared Radiation

• Visible Light

• X-Rays

On the continuous spectrum, which color has the longest wavelength

• Blue

• Green

• Red

• Yellow

Which color on the continous spectrum has the highest energy?

• Red

• Green

• Blue

• Violet

How are emission spectra formed?

• When photons are absorbed and electrons return to a lower energy level

• When photons are absorbed and electrons are promoted to a higher energy level

• When photons are emitted and electrons are promoted to a higher energy level

• When photons are emitted and electrons return to a lower energy level

a transition into n=1 emits what type of light/radiation?

• UV

• Visible

• Infrared

• gamma rays

a transition into n=2 emits what type of light/radiation?

• UV

• Visible

• Infrared

• microwaves

A transition into n=3 emits what type of light/radiation?

• UV

• Visible

• Infrared

• X-Rays

Which has the longer wavelength?

• UV

• Visible

• Infrared