# Exam 1

 Speed of Light
 c= 3.00*108m/s
 C=lambda*frequency
 wavelength*frequency=speed
 Gamma Rays
 400mm and violet
 700mm and red
 Nanometers
 10-9
 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
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