Atomic Theory Flashcards
What is frequency inversely proportional to?
Wavelength
In the Photoelectric Effect, does light intensity increase the energy of ejected electrons?
No
What does photoelectric effect prove?
Light is emitted in photons
What is a blackbody?
A surface that absorbs and emits all wavelengths of light
What does the frequency (and therefore wavelength) of blackbody radiation depend on?
Temperature in K
How many quantum numbers define an electron?
4
What does the principal quantum number define?
Orbital size
What is a node?
An area where probability of finding an electron is 0
How many nodes do 1s, 2s and 3s have?
0, 1 and 2 respectively
Where are the nodes in p orbitals?
Along the plane the dumbbell crosses
Where are the nodes in d orbital?
2 nodes, one along each plane that the dumbbell crosses
What are the 3 2p orbitals?
Along x, along y and along z
What is Madelung’s Principle?
n+l
What is Pauli’s Exclusion Principle?
1 electron must spin up and 1 must spin down
What do the arrows in the Aufbau principle represent?
The order in which electrons are allocated to orbitals
