Ch. 4 & 5 Vocab Flashcards
(42 cards)
All the forms of electromagnetic radiation form the……
Electromagnetic spectrum
A form of energy that exhibits wavelike behavior as it travels through space
Electromagnetic radiation
The distance between corresponding points on adjacent waves
Wavelength
Is defined as the number of waves that pass a given point in a specific time
Frequency
Refers to the emission of electrons from a metal when light shines on the metal
Photoelectric effect
The minimum quantity of energy that can be lost or gained by an atom
Quantum
A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
Photon
The lowest energy state of an atom
Ground state
A state in which an atom has a higher potential energy than it has at its ground state
Excited state
The spectrum on which bands of light are visible
Line-emission spectrum
The emission of a continuous range of frequencies of electromagnetic radiation
Continuous spectrum
States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle
Heisenberg uncertainty principle
Describes mathematically the wave properties of electrons and other very small particles
Quantum theory
Three-dimensional region around the nucleus that indicates the probable location of an electron
Orbital
Specify the properties of atomic orbitals in the properties of electrons in orbitals
Quantum numbers
Symbolized by n, indicates the main energy level occupied by the electron
Principal quantum number
Symbolized by l, indicates the shape of the orbital
Angular momentum quantum number
Symbolized by m, indicates the orientation of an electron around the nucleus
Magnetic quantum number
The arrangement of electrons in and atom is known as…
Electron configuration
States that in the electron occupies the lowest energy orbital can receive it.
Aufdau principle
No two electrons in the same atom can have the same set of four quantum numbers
Pauli exclusion principle
Orbitals of equal energy are each occupied by one electron before any is occupied by a second electron, and all electrons in singly occupied orbitals must have the same spin state
Hund’s rule
The group 18 elements are called….
Noble gases
Refers to our main energy level occupied, in most cases, by eight electrons
Noble gas configuration