LM11-12 Flashcards
When an electron jumps energy levels, a photon is ____
absorbed
When an electron falls energy levels, a photon is ____
emitted
Lyman series
Electron falls to n=1
Lyman series falls under what part of the EMR spectrum?
UV
Balmer series
Electron falls to n = 2
Balmer series falls under what part of the EMR spectrum?
Visible
Paschen series
Electron falls to n = 3
Paschen series falls under what part of the EMR spectrum?
Infrared
The EMR region of emission lines is found from the _____ (lower/higher energy level)
lower energy level
Ψ
wave function
Ψ squared
Probability of finding particles in a position
Rydberg’s constant is the _____
ionization energy of hydrogen
Quantum number n
Principle quantum number
Quantum number l
Angular momentum
What is the maximum value of l in relation to n?
n-1
l = 0 and shape
s orbital, spherical
l = 1 and shape
p orbital, dumbbell
l = 2 and shape
d orbital, two overlapping dumbbells
Quantum number ml and meaning
magnetical quantum number, orientation
What can ml be in relation to l?
-l, 0, +l
Orientations for l = 0
1 (0)
Orientations for l = 1
3 (-1, 0, 1)
Orientations for l = 2
5 (-2, -1, 0, 1, 2)
Quantum number ms
Electron spin
Electron spin (ms) possible values
+1/2 or -1/2
Aufbau principle
Electron configuration starts with orbits closest to nucleus and ascending (emphasis on sequence)
Pauli Exclusion Principle
Never more than two electrons in one orbit
Hund’s rule
Distribute electrons amongst degenerate (equal) orbitals (i.e. the multiple orbitals in p and d subshells)
