GEN CHEM CH.6

Frequency

the number of waves that pass a point in a given period of time (1 Hz = 1 s−1)

Wavelength

the distance between two peaks on the wave

Photoelectric Effect

If a photon has enough energy, it causes a metal to lose an electron • Decreasing the energy does not release an electron from metal • Increasing the intensity of a low energy photon does not overcome the work function

Principle of Complementary

when an object has two unique properties, they can not be observed simultaneously

Heisenberg Uncertainty Principle

that the position and speed of a particle are inversely proportional to its mass

Hund’s Rule

• “For degenerate orbitals, the lowest energy is attained when the number of electrons with the same spin is maximized” • This means a given set of orbitals in the same sublevel, there is one electron in each orbital before pairing, and electrons will have the same spin