an abbreviated way to write the name of an element
positively charged center of an atom
negatively charged particles that move around the nucleus of an atom
atomic particle with a positive charge, found in nucleus
an atomic particle with no charge, found in nucleus
the number of protons in the nucleus
the region forned by electrons
particle that makes up protons and neutrons
the total number of protons and neutrons in the nucleus
any of two or more atoms of the same element with a different number of neutrons
average atomic mass
average mass of the mixture of isotopes
a table of the elements arranged according to repeated changes in properties
a vertical row in the periodic table
a horizontal row in the periodic table
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