Emission Spectrum

The picture shows an atom in the ground state absorbing energy and the electron jumps to the excited state. Which state has higher energy?

• Ground State

• Excited State

The parallel lines represents...

• energy levels of the atom
• energy levels of the electrons
• energy levels of the photons
• energy levels of the nucleus

Each element produces its own pattern of emission spectra lines because each element has its own distinct

• Speed of light

• Electron configuration

• Number of neutrons

• None of these

Look carefully at the picture. It shows an electron in the excited state on the left, and the electron returning to its ground state on the right. When the electron return to the ground state it emits a_______________________.

• blast of cold air

• electrostatic charge

• proton

• photon (light)

True or False: The ground state is the highest energy state of an atom.

• True

• False

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Sodium

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Sodium

Which element(s) is/are found in the star's spectra below?

• Hydrogen only

• Hydrogen & Helium

• Calcium only

• Hydrogen & Calcium

Line emission spectrum shown below happens when

• Electron transition from lower to higher energy level.
• Electron transition from higher to lower energy level.
• Electron exist in fixed energy states
• Electron transition between different energy levels.

For an electron to change from ground state to an excited stated it must...

• Absorb energy
• Release energy