
atom
The smallest unit of an element, having all the characteristics of that element and consisting of a very small and dense central nucleus containing protons and neutrons, surrounded by one or more shells of orbiting electrons.
Synonym:
atoms
Citation:
Adapted from "atom." (n.d.) American Heritage® Dictionary of the English Language, Fifth Edition. (2011). Retrieved September 18 2015 from http://www.thefreedictionary.com/atom
English
References:
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