Bohr Model of the Atom
Electrons occupy circular orbits which represent quantum energy levlels
Quantum Mechanical Model (Schrodinger)
Utilizes an electron cloud which represents where the electron would be 90% of the time
A region of space where there is a high probability of finding an electron.
n = what?
s, p, d and f equal what?
electrons occupy the orbitals of lowest energy levels first
Pauli Exclusion Principle
2 electrons per orbital; must have opposite spin
1 electron per orbital until all orbitals of equal energy are filled
shorter wavelength =
higher frequency = higher energy
higher frequency = higher energy =
EM spectrum from long to short
radio - micro - infrared - visible light - ultraviolet - x-rays - gamma rays
What is true about atomic spectra
No two elements have the same emission spectrum!
the electron has its lowest possible energy
an electron moves to a higher energy level by absorbing a certain quantum of energy
occurs when the electron drops back down to a lower energy level; this light is proportional to the energy change of the electron
the physics of describing the motions of bodies larger than atoms
describes the motions of subatomic particles