4.1
When an electron is promoted to a higher energy level it is in what state? Did it absorb or emit energy?
Excited state - Absorption
Which wave would be travelling at a greater speed - Gamma rays or x-rays?
Neither!
Bohr thought electrons moved in _______________ and Schrodinger thought they moved in _____________
orbits - orbitals
Orbital
Electrons will occupy their lowest energy level possible
Aufbau Principle
When an electron drops to a lower energy level than it was in previously. Did it absorb or emit energy?
Relaxed state - Emission
Determine the amount of energy that is found in an infrared wave with a frequency of 7.89 x 1014 Hz
5.23 x 10-19 J
What is the main issue with Bohr's model when compared to Schrodinger's?
It didn't account for the uncertainty of where electrons could be (Bohr said there was a definite space they would be in)
Indicates the main energy level occupied by the electron
Principal Quantum Number
Pauli Exclusion Principle
What we see as a result of electrons moving through energy levels (being promoted then relaxing down)
Line Emission Spectra
Determine the frequency of a wave that has a wavelength of 5.94 x 10-2 nm.
5.05 x 1018 Hz
His equations gave wave functions that give the probability of finding an electron in a given location.
Schrodinger
Exhibiting behavior of waves and particles
Dual-wave particle nature
One electron must be placed in each orbital of equal energy before they are able to be paired
Hund's Rule
The distance between the same spot on a wave
Wavelength
Determine the wavelength and energy that is created from a wave with a frequency of 1.95 x 109 Hz.
0.154 m and 1.29 x 10-24 J
Linked hydrogen atom's electrons with photon emission
It is impossible to determine simultaneously the position and velocity of an electron or other particles
Heisenberg Uncertainty Principle
How many electrons can an energy level of n = 5 hold?
2n^2 so 2*52 so 50
Which would have a higher energy - 1000 mm or 1.0 m?
Neither they would have the same!
Determine the type of wave that is present with an energy of 5.923 x 10-20 KJ.
Infrared
He realized that atoms and molecules only emit energies in certain quantities called quanta
Max Plank
A mathematical way to describe the wave properties of electrons and other small particles
Schrodinger Wave Equation
Why do some configurations differ from those we expect?
want to reach a more stable energy configuration so they promote an electron from another orbital (s) to fulfill their needs