The Bohr Model

what does each letter in the equation E=hv represent?

e= energy, v= frequency, h= 6.626×10^-34

what does two quanta and three quanta look like?

two quanta: E=2hv, three quanta: E=3hv

what are photons?

tiny discreet packets of energy making light

what does it mean for something to be quantized?

It means it posses particle-like properties. It exists in discreet whole number quantities, and is considered to be discontinuous.

what are three examples of things being quantized?

eggs in a basket, students in a classroom, and cars in a parking lot.

According to Planck, could an amount of energy equal to 2.5hv be absorbed or emitted by an object?

No, cause only whole number packets of energy can be absorbed or emitted by an object.

what is a spectroscope?

A device similar to a prism, which separates the light into its component wavelengths or colours.

what is a bright line spectrum?

A bright-line pattern unique to a specific element.

what is a quantum number?

A number that describes the energy level of an electron in an atom. Represented by the integer, “n".

what is the ground state?

the lowest allowed energy state.

why can atomic structures not be continuous?

because an atoms energy states could only be certain values and not others.

what happens when a sample of hydrogen gas is heated in a discharge tube?

the electrons in the hydrogen atoms absorb energy to “jump” to larger orbits

how does an electron at a high energy orbit return to a lower energy orbit?

by emitting a specific amount of energy corresponding to the difference the higher and lower energy orbits.

if an electron went from an excited state to n=1 and emits energy in the ultraviolet region, what series is this?

The Lyman Series

A transition from excited states to the third and fourth orbits results in energies in the infrared region being emitted, what series is this?

Pashen and Brackett series.

how do electrons generate visible lines in hydrogens emission spectrum?

excited electrons return to n=2 from higher levels by emitting specific energy in the visible spectrum

which electron transitions generate lines in the UV region of the electromagnetic spectrum?

electron transitions from any excited states down to n=1, generates an emission line in the UV region

what is the speed of light?

c=3.00 X 10^8

the equation b/hc=…

1.097 X 10^7 m^-1