C-2: Atomic Emission Spectra

Front

What is an atomic emission spectrum?

Back

An atomic emission spectrum is a spectrum of the electromagnetic radiation emitted by a source, showing distinct lines corresponding to specific wavelengths of light emitted by electrons transitioning between energy levels in an atom.

Front

What does it mean for an atomic emission spectrum to be quantized?

Back

Quantized means that the energy levels of electrons in an atom are discrete and not continuous, leading to specific wavelengths of light being emitted.

Front

What is the relationship between energy levels and electron stability?

Back

Electrons in lower energy levels are more stable than those in higher energy levels. Higher energy levels have more energy but are less stable.

Front

What happens when an electron absorbs energy?

Back

When an electron absorbs energy, it moves from a lower energy level to a higher energy level.

Front

What occurs when an electron drops from a higher to a lower energy level?

Back

When an electron drops from a higher to a lower energy level, it emits energy in the form of light.

Front

Which transition emits the most energy?

Back

An electron transitioning from the 4th energy level to the 1st energy level emits the most energy.

Front

What is the significance of the lines in an atomic emission spectrum?

Back

The lines in an atomic emission spectrum represent the specific wavelengths of light emitted when electrons transition between energy levels.

Front

How does the energy of emitted light relate to the electron transition?

Back

The energy of the emitted light is directly related to the difference in energy between the two levels involved in the electron transition.

Front

What is the difference between continuous and discrete spectra?

Back

Continuous spectra show a full range of wavelengths without gaps, while discrete spectra show specific lines corresponding to particular wavelengths.

Front

What is the role of energy in electron transitions?

Back

Energy is required for an electron to move to a higher energy level and is released when it falls to a lower energy level.