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Atomic Structure and the Periodic Table
Terms in this set (15)
atomic mass unit
A unit of mass that describes the mass of an atom. (amu)
Number of protons (P+) in an atom
# of protons
Equal to the # of electrons
atomic mass - atomic number
Equals the # of neutrons
Sum of protons and neutrons (P+N)
The positively charged dense center of an atom.
Located in the nucleus; A subatomic particle that has a positive charge and that is found in the nucleus of an atom and has mass
Located in the nucleus; A subatomic particle that has no charge and that is found in the nucleus of an atom and has mass
Located in the electron cloud; A subatomic particle that has a negative charge... almost no mass
The Electron Cloud Model (modern model)
Atom consists of a nucleus that contains protons and neutrons surrounded by an electron cloud
Also know as the Planetary Model, every electron follow its own orbit/path around the nucleus.
An ion with the SAME number of proton+ and electron- charges.
Overall charge of the nucleus
Overall charge of the atom
the nucleus (P+N)
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