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vocab for atoms

Electromagnetic radiation a form of energy that exhibits wavelike behavior as it travels through space.
Electromagnetic spectrum all the forms of electromagnetic radiation.
Wavelength the distance between corresponding points on adjacent waves.
Frequency the number of waves that pass a given point in a specific time, usually one second.
Visible Light reflect IR light and transmit visible.
Velocity of a wave distance traversed by a periodic, or cyclic, motion per unit time (in any direction).
photoelectric effect the emission of electrons from a metal when light shines on the metal.
quantum the minimum quantity of energy that can be gained or lost by an atom.
Planck’s Constant is a physical constant reflecting the sizes of quanta in quantum mechanics.
Photon a particle of electromagnetic radiation that has zero rest mass and carries a quantum of energy.
Energy of a Photon symbolized by hv.
Ground State the lowest energy state of an atom.
Excited State a state in which an atom has a higher potential energy than it has in its ground state.
Line emission spectrum a series of specific wavelengths of emitted light created when the visible portion of light from excited atoms is shines through a prism.
continuous spectrum the emission of a continuous range of frequencies of electromagnetic radiation.
Bohr radius the radius of the ground state orbit of the hydrogen atom in the bohr theory.
Interference in physics the superpostion of two or more waves resulting in a new wave pattern.
Heisenberg Uncertainty Principle it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.
Quantum Theory a mathematical description of the wave properties of electrons and other very small particles.
Quantum Mechanics a mathematical description of the wave properties of electrons and other very small particles.
Orbital a threedimensional region around the nucleus that indicates the probable location of an electron.
Quantum numbers a number that specifies the properties of atomic orbitals and the properties of electrons in orbitals.
Principle Quantum number (n) the quantum number that indicates the main energy level occupied by the electron.
Angular momentum quantum number (l ) the quantum number that indicates the shape of the orbital.
Magnetic quantum number (m) the quantum number that indicates the orientation of an orbital around the nucleus.
Spin quantum number (s) the quantum number that has only two possible values, + ½ and
Aufban Principle an electron occupies the lowest
Electron Configuration the arrangement of electrons in an atom.
Pauli Exclusion Principle no two electrons in the same atom can have the same set of four quantum numbers.
Hund’s Rule orbitals of equal energy are each occupied by in electron before any orbital is occupied by a second electron, and all electrons in singly occupied orbitals must have the same spin.
Valence Electron an electron that is available to be lost, gained, or shared in the formation of chemical compounds.
Inner shell electrons
Highest occupied level the electron containing main energy lecel with the highest principal quantum number.
Noble Gas Configuration an outer main energy level fully occupied in most cases by eight electrons.
s sublevel or suborbital is the lowest energy.
p sublevel or suborbital middle level
f sublevel or suborbital highst energy level
Created by: EllieKennamer



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