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Chapter 5 Chemistry Vocab
Terms in this set (20)
a form of energy that exhibits wave-like behavior as it travels through space.
(λ) is the shortest distance between equivalent points on a continuous wave.
(ν) is the number of waves that pass a given point per second.
•is the wave's height from the origin to a crest.
includes all forms of electromagnetic radiation.
-is a particle of electromagnetic radiation with no mass that carries a quantum of energy.
atomic emission spectrum
•set of frequencies of the electromagnetic waves emitted by the atoms of the element.
•Each element's atomic emission spectrum is unique.
The lowest allowable energy state of an atom
Heisenberg uncertainty principle
•states that it is fundamentally impossible to know precisely both the velocity and position of a particle at the same time.
quantum mechanicalmodel of the atom.
•Schrödinger treated electrons as waves in a model
The wave function predicts a three-dimensional region around the nucleus
principal quantum number
indicates the relative size and energy of atomic orbitals.
principal energy level
n specifies the atom's major energy levels
energy sub levels
•are contained within the principal energy levels.
The arrangement of electrons in the atom
states that each electron occupies the lowest energy orbital available.
Pauli Exclusion Principle
•states that a maximum of two electrons can occupy a single orbital, but only if the electrons have opposite spins.
states that 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
•are defined as electrons in the atom's outermost orbitals—those associated with the atom's highest principal energy level.
consists of the element's symbol representing the nucleus, surrounded by dots representing the element's valence electrons.
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