Self-Check Activity

Electron configuration can be written by using the _______, the Pauli exclusion principle, and Hund's rule.

Aufbau Principle

______ describes the motion of large bodies.

Classical Mechanics

E = hν

E = amount of radiant energy of a single quantum abosrbed or emitted by a body h = Planck's constant, 6.626 x 10^-34 J*s ν = frequency of raditaion

When atoms absorb energy, their electrons move to higher _______.

Energy Levels

When an electron drops to a lower energy level, it emits light that has a _______ directly proportional to the energy change of the electron.

Frequency

Bohr proposed that an electron is found only in specific circular paths, or ______, around the nucleus.

Orbits

Describing light as ______ of energy that behave as particles helps to explain the photoelectric effect.

Quanta

The ________ model describes the energy an electron can have and the probability of finding the electron in various locations around the nucleus of an atom.

Quantum Mechanical

______ describes the motion of very small particles, such as subatomic particles.

Quantum Mechanics.

If you know the value of E but do not know the value of ν, how can you find λ?

Solve both equations for ν (ν = c/λ, ν = E/h). Set the values for ν equal to each other (c/λ = E/h). Solve for λ (λ = ch/E). Subsitute the values for c, E, and H and calculate λ.

Orbitals, which are found in ______, have different shapes, depending on the energy of the electrons they contain.

Sublevels

c = λν

c = the speed of light, 2.998 x 10^8 m/s λ = wavelength ν = frequency