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Atomic Structure

Unit 1-Atomic Structure

TermDefinition
atom smallest particle of matter that retains the properties of the element
average atomic mass the average mass of all the isotopes of an element
atomic number equal to the number of protons; increases as you move left to right on the periodic table
Bohr model shows the placement of all electrons on their respective energy levels
electron particle found in the electron cloud with an electrical charge of -1
electron cloud region around the nucleus where electrons are most likely found
isotope atoms of the same element with different numbers of neutrons
Lewis structure uses the element symbol and dots to represent the valence electrons
mass number the sum of the protons and neutrons in the nucleus of an atom
neutron neutral particle found in the nucleus with no electrical charge
nucleus positively charged center of the atom
proton particle found in the nucleus of an atom with a charge of +1
valence electron electrons in the outer energy level
Created by: vfenstermaker