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Where are lower energy levels?
closer to the nucleus
Where are high energy levels?
farther from nucleus
What is quantum?
energy needed for an electron to jump from ground to excited state
What is ground state?
electrons in lowest energy level possible
What is an excited atom?
electrons move to higher energy levels when an atom gains energy
atom soon emits the same amount of energy absorbed which is seen as visible light
What is the speed of light?
3.0 x 10
What is the equation for c?
c=wavelength x frequency
what is the energy equation?
e= h x f
What is Plank's constant?
h= 6.626 x 10
What is electromagnetic radiation?
form of energy that exhibits wavelike behaviors as it travels through space
What is the electromagnetic spectrum?
encompasses all forms of electromagnetic radiation
What is photoelectric effect?
photo electrons emitted from metal's surface when light of specific frequency strikes it
What is a photon?
particle of electromagnetic radiation with no mass that carries a quantum of energy
What is atomic emission spectrum?
set of frequencies of the electromagnetic waves emitted by atoms of an element
Who proposed the quantum model?
What did Louis deBroglie propose?
electron wave-particle duality
all moving particles exhibit wavelike characteristics
What did Heisenburg's uncertaincy principle say?
it is impossible to know both the velocity and position of a particle at the same time
What did Edwin Schodinger do?
developed quantum mechanical model of the atom
predicts probable location of an electron
electrons treated as waves and not in circular orbits
What does a s look like?
What does p look like?
What does d look like?
What is Aufabau principle?
each electron occupies the lowest energy level possible
What is Pauli eclusion priciple?
only two electrons with oppposite spins can occupy an orbital
no 2 electrons within the same element habe the same 4 quantum numbers
What is Hund's Rule?
single electrons with the same spin must occupy each equal energy orbital before electrons can be paired
What are Valence electrons?
electron in atom's highest energy levels
what is n?
principle quantum number
what is l?
describes the orbital shape within an energy level
How many electorons can an orbital hold?
How many orbitals does s have?
How many orbitals does p have?
How many orbitals does d have?
How many orbitals does f have?
What is m?
describes the orentation of orbital in space
What is s (quantum number)?
describes spin of electron orbital