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Atomic Structure

Terms in this set (13)

atomic structure
The atom consists of three component parts: Protons, Neutrons, and Electrons
atom
Smallest particle of an element
mass number
The number of protons plus neutrons in the nucleus of an atom
atomic number
the order of an element in Mendeleev's table of the elements, also the number of protons in the element's nucleus
electron configuration
the arrangement of electrons in an atom
energy level
The specific amount of energy an electron has.
neutron
a subatomic particle that has no charge and that is found in the nucleus of an atom
nucleus
the positively charged dense center of an atom
orbital
a region of space around the nucleus where an electron is likely to be found
proton
positively charged particle of an atom (+)
valence electrons
electrons on the outermost energy level of an atom
electron
negatively charged particle of an atom (-)
ion
an atom or group of atoms that have gained or lost one or more electrons. They have an overall charge.
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