4-2 Atomic Emission Spectra and the Bohr Model

what is the atomic emission spectra?

pattern formed when light emitted by element split into different wavelengths

each orbit in the Bohr model has a…

fixed energy level

a quantum of energy is…

amount of energy required to move electron from one energy level to another

when was the bohr model proposed?

1913

what element’s emission spectrum did Bohr’s model predict?

hydrogen

what color does lithium emit?

light red

what color does sodium emit?

strong orange

what color does potassium emit?

pink

what color does rubidium emit?

red-violet

what color does cesium emit?

blue or violet

what color does calcium emit?

orange-red

what color does strontium emit?

strong red

what color does barium emit?

pale green

what color does copper emit, and what also happens often when it is burned?

blue-green, white flashes

what color does lead emit?

gray-white

what element makes a light-red flame?

lithium

what element makes a strong orange flame?

sodium

what element makes a pink flame?

potassium

what element makes a red-violet flame?

rubidium

what element makes blue/violet flame?

cesium

what element makes an orange-red flame?

calcium

what element makes a strong-red flame?

strontium

what element makes a pale green flame?

barium

what element makes a blue-green flame?

copper

what element makes a gray-white flame?

lead

why are energy levels of an atom have negative energy?

electrons are bound to the atom

where does most energy change occur for energy level change? (think drop)

level 5 to 1

what percent of energy occurs within the “special drop zone?“

96%