Chem lecture 9/5/13
Coulomb’s Law – forces between charged particles increase with decreasing separation.
F=q q 1 2εr
PE varies according to or for an electron near the nucleus
Positive charges is a well that can attract negative charges.
Slow moving electron will most likely never leave the well.
An electron at a given separation from a positive charge can be removed by giving it an
amount of energy (for an electron in an atom, this is called ionization energy).
Electron cannot go above 0 otherwise it will be a positive and negative charge
Balmer noticed that there is a relationship between wavelengths and energy
Atoms can absorb and emit light energy only a certain defined values.
R= 3.29 x 10 s
Electrons in atoms cannot have any energy, only certain energies called the shell model of
Rydberg equation predicts that atomic spectrum of hydrogen contains additional lines