Exam 1

Speed of Light
c= 3.00*108m/s
C=lambda*frequency
wavelength*frequency=speed
Gamma Rays
400mm and violet
Radio Waves
700mm and red
Nanometers
10-9
Blackbody Radiation
when a solid is heated it emits electromagnetic radiation
E=hv
amount of energy emitted. planks constant and the frequency.
Ephoton=hv
Einstein’s theory photoelectric effect
Rydberg equation

1/lambda=Rinifinity(1/nf2-1/ni2)

Rinifinity=1.097*107m-1

Ground State
lowest energyt state of an atom
;E=Ef-Ei

Ef=-2.18*10-18J(1/nf2)

same for Ei

;=h/mu
wavelength =6.63*10-34 divide by (mass*velocity)
Principal Quantum Number
Designates the size of the particular orbital. The larger the “n” is the greater the average distance of an electron in the orbital from the nucleus.
Angular Momentum Quantum Number

describes the shape of the atomic orbital. L=n-1

Ex. N=2

L=1,0

Magnetic Quantum Number

describes the orientation of the orbital in space. Within a subshell the value of ml depends on the value of L.

ml=(2l+1)

Ex. L=2

;ml=-1,0,1

Pauli Exclusion Principle
No two electrons in an atom can have the same four quantum numbers!
The Aufbau Principle
fill lowest shells first.
Hund’s Rule
fill across with same charge.
Quantum L

L=0=s

L=1=p

L=2=d

L=3=f