Definition of Atomic number

1. Noun. The order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element.

Generic synonyms: Number
Specialized synonyms: Magic Number



Definition of Atomic number

1. Noun. (physics chemistry) The number, equal to the number of protons in an atom that determines its chemical properties. Symbol: Z ¹

¹ Source: wiktionary.com

Medical Definition of Atomic number

1. Symbol Z. The number of protons in the nucleus of an atom and also its characteristic atomic number. The atomic numbers of the known elements form a complete series from 1 (hydrogen) to 103 (lawrencium). (16 Dec 1997)

Atomic Number Pictures

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Lexicographical Neighbors of Atomic Number

atomic clocks
atomic cocktail
atomic core
atomic energy
atomic explosion
atomic force microscope
atomic force microscopy
atomic forensics
atomic heat
atomic nuclei
atomic nucleus
atomic number (current term)
atomic number 1
atomic number 10
atomic number 100
atomic number 101
atomic number 102
atomic number 103
atomic number 104
atomic number 105
atomic number 106
atomic number 107
atomic number 11
atomic number 12
atomic number 13
atomic number 14

Literary usage of Atomic number

Below you will find example usage of this term as found in modern and/or classical literature:

1. Science by American Association for the Advancement of Science (1917)
"It is to be noted, however, that in going up from bromine, atomic number 35, to uranium, atomic number 92, the length of the step does change by a few per ..."

2. Science by American Association for the Advancement of Science (1919)
"First, the atomic weights of the lighter atoms of even atomic number beginning with carbon are, 12, 16, 20, 24, 28, 32, 40, 40, 48, 52 and 66, ..."

3. The Scientific Monthly by American Association for the Advancement of Science (1921)
"This work has led to the conception of a characteristic atomic number which ... It appears indeed that this atomic number is really more fundamental than ..."

4. Elements of Chemistry: Theoretical and Practical by William Allen Miller (1864)
"In these the atomic number is double the equivalent number. ... 17) is really the atomic number, with the exception of aluminum and rhodium, in which case ..."

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