atomic-structure

atomic structure

noun Physics.
the structure of an atom, theoretically consisting of a positively charged nucleus surrounded and neutralized by negatively charged electrons revolving in orbits at varying distances from the nucleus, the constitution of the nucleus and the arrangement of the electrons differing with various chemical elements.

Origin:
1895–1900

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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an extraordinary or unusual thing, person, or event; an exceptional example or instance.
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World English Dictionary
atomic structure
 
n
the concept of an atom as a central positively charged nucleus consisting of protons and neutrons surrounded by a number of electrons. The number of electrons is equal to the number of protons: the whole entity is thus electrically neutral

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