Chapter 5 Flashcards
When electrons are emitted from a metals surface when light of a certain frequency shines on it
Photoelectric effect
The minimum amount of energy that can be gained or lost by an atom
Quantum
A particle of electromagnetic radiation with no mass that carries a quantum of energy
Photon
_______of an element is the set of frequencies of the electromagnetic waves emitted by the atoms of the element
Atomic emission spectrum
Lowest allowable energy state of an atom
Ground state
The number of each of orbit (n=?)
Quantum number
Which element did Bohr come up with a model for?
Hydrogen
Model that schrodinger created, treated electrons as waves
Quantum mechanical model of the atom
The wave function predicts a 3 dimensional region around the nucleus called the_____
Atomic orbital
(N=?) indicates the relative size and energy of atomic orbitals
Principle quantum number
N specifies the atoms major energy levels, otherwise known as the
The principle energy levels
The arrangement of electrons in the atom
Electron configuration
Principle that states that each electron occupied the lowest available energy orbital available
Aufbau principle
Principle that states that a maximum of two electrons can occupy a single orbital if they have opposite spins
Pauli exclusion principle
States the single electrons with the same spin must occupy each equal energy orbital before additional electrons with opposite spins can occupy the same energy level orbitals
Hunds rule
Consists of the elements symbol representing the nucleus surrounded by dots representing the elements valence electrons
Electron dot structure
Hypothesized that particles could also have wavelike behaviors
Louis de broglie
States that it is fundamentally impossible to know precisely both the velocity and position of a particle at the same time
Heisenberg uncertainty principle
Electrons in the _____ orbital have the highest energy
Outermost
Importance of d9/d4 exceptions
Minimizes repulsion
