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Periodic Table topics
everything related to Periodic Table
4
Science
Not Applicable
04/02/2005

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Term
Atomic Number
Definition
the number that designates the identity of an element
Term
Atomic Mass
Definition
the atomic mass is the average mass of an element in atomic mass units (amu).
Term
Mass Number
Definition
the total number of nucleons in an atomic nucleus.
Term
Isotopes
Definition
atoms of the same element that contain different numbers of neutrons
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