Spectra

Which drawing represents the process by which an emission line is formed? [Emission means that energy is being "emitted" or released by the atom.]

• A

• B

• C

• D

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Sodium

What color visible light is released when an electron transitions from n = 3 to n = 2?

• Red

• Blue

• Violet

• Green

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Sodium

Emission lines create ............... spectral lines on a visible light spectra due to the electrons moving into their ........... state.

An electron in n=4 has more _______ than an electron in n=2

• Stability

• Energy

• Spin

• Wave nature

Emission of light from an atom occurs when an electron

• drops from a higher to a lower energy level.
•    jumps from a lower to a higher energy level.   
•    moves within its atomic orbital.
• falls into the nucleus.

Which electron transition is associated with a higher energy wave?

• n = 4 to n = 3

• n = 4 to n = 2

• n = 4 to n = 1

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

• Absorb energy
• Release energy

What subatomic particle is responsible for the spectral lines seen in emission spectra diagrams?

• electrons

• protons

• neutrons