7.1/7.2 - Nature of Light ; Atomic Spectra Lecture

A* =

10^-10

what units is frequency in

Hz or 1/s or s^-1

what unit is wavelength in

meters

define frequency

cycles per second

define wavelength

distance wave travels in one cycle

define amplitude

the heigh of a wave

frequency and wavelength are ___ proportional.

inversely

the bigger the wavelength, the strong/weaker it is.

weaker

what is stronger a 450nm wavelength or 870 nm wavelength?

450nm

when frequency number increases, the stronger/weaker it is.

stronger

what is stronger 10¹⁸ Hz frequency or 10²¹ Hz frequency?

10²¹

low energy, low frequency, long/short wavelength

long

high energy, high frequency, long/short wavelength

short wavelength

frequency =

c/ wavelength

E (Energy) formula

hv or (hc)/wavelength

what are the units of h?

(J * s)/ photon

changed in energy equarion

deltaE = deltanhv

rydberg equation

1 / wavelength = R ( (1/n₁² ) - (1/n₂² ) )

what is the lowest energy of an atom’s electron orbit called

the ground state

when an atom is in any orbit higher than n=1, the atom is in an ____.

excited state

the absorption to n = 1 to n = 2 OR the emission from n = 2 to n =1 takes _____ energy that other changes between n levels.

significantly more

define absorption

an electron moving from lower energy level to higher energy level

define emission

an electron moving from a higher to a lower energy level

write si chart