Electronic transitions
V = fl
E = hf = hc/l
V = Velocity of light (3x10^3)
frequency
wave length ( m or nm) (1m = 10^9nm)
h = planck's constant
f = frequency (h3)
Atom
Cannot be broken down any further
positively charged nucleus surrounded by negatively charged negatively charged electrons
they travel in circular orbits
Electronic energy levels in atoms
Criteria
Energy absorbed MUST be exact to the energy levels
Properties
Energy absorbed unequal = no rise
If it levels up, it goes from ground state to excited state
If the electron falls to lower levels, it loses energy (photon)
Different pathways for energy level fall
Speed of light
v=fl
v=wave speed
l=wavelength
f=frequency
c=fl
c = vl for any em waves
E is directly proportional to f
6.63 x 10^-34 Joule seconds (Js)
4.14 x 10^-15 electron volt seconds (eVs)
c = speed of light
Colours and wavelength ( in ascending order)
blue
green
yellow
violet
orange
red