Bohr Model, Quantum Model, Quantum Mechanics Flashcards
Pattern of lines emitted by an element-containing light as it passes through a prism
Line spectrum
3 postulates of the Bohr’s model of an atom
- Electron can only occupy a certain orbits (certain energies)
- Energy in permitted orbits have “allowed” or “quantized” energies
- Energy is only absorbed/emitted in such a way as to move an electron from one allowed energy state to another.
Scientist that proposed matter has wave properties; observable for small pieces such as electrons
De Broglie
In λ = h/mv, wavelength is ______ proportional to the mass of a particle.
inversely
The wave-particle duality limits that we cannot know the location and momentum of the particle at the same time.
Heisenberg’s Uncertainty Principle
Theory that treats electrons as both a wave and a particle
Quantum mechanics
The modern atomic model is called the ______.
electron cloud model
In Schrödinger equation, the electron’s location in a 3D space is described using the ______.
Probability density
Attempt to describe an electron’s location as electron clouds or probabilities
Orbitals
Atomic Mass Units (amu) is equivalent to ______.
1/12 of the mass of a C12 atom
4 quantum numbers
Principal (n)
Angular Momentum (l)
Magnetic (ml)
Magnetic Spin (ms)
Describes the energy level or shell
Principal
Describes shape of orbital, subshell
Angular Momentum
List the 4 subshell designations in angular momentum quantum number
s=0
p=1
d=2
f=3
Describes the possible orientation in 3D space
Magnetic quantum number
Describes spin on electron in an orbital
Magnetic spin
No two electrons in the same atom can have exactly the same set of all 4 quantum numbers
Pauli Exclusion Principle
