Quantum Mechanical Model and Electron Configurations Flashcards
What are the 4 quantum numbers?
- principal quantum number (n)
- orbital shape quantum number (l)
- magnetic quantum number (m1)
- spin quantum number (m2)
What does the principal quantum number represent?
shell/energy level -> describes the energy level and orbital size
What does the orbital shape quantum number represent?
the sublevel or subshell
What does the magnetic quantum number represent?
the orientation of the orbital in 3D space
What does the spin quantum number represent?
describes the behaviour within a magnetic field, the direction or spin
How many sublevels does each energy have?
- Level 1 has 1 sublevel (s)
- Level 2 has 2 sublevels (s, p)
- Level 3 has 3 sublevels (s, p, d )
- Level 4 has 4 sublevels (s, p, d, f)
How many possible orientations does the s orbital have?
1
How many possible orientations does the p orbital have?
3
How many possible orientations do the d shaped orbitals have?
5
How many possible orientations do the f orbitals have?
7
Orbital definition
a region of 3-D space where there is a high (95%) probability of finding an electron
What is the Heisenberg Uncertainty principle?
- “One cannot simultaneously determine both the position and momentum of an electron”
- You can find out where the electron is, but NOT where it is goingOR
- You can find out where the electron is going but NOT where it is
What is the Pauli Exclusion Principle
“Two electrons occupying the same orbital must have opposite spins”
