atomic number

Number of protons in the nucleus of an atom. It is equal to the positive charge on the nucleus. In a neutral atom, it is also equal to the number of electrons surrounding the nucleus. The chemical elements are arranged in the periodic table of the elements according to their atomic number. Nuclear notation is used to label an atom according to the ...
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Atomic Number

Integral number of protons in the nucleus; defines the identity of element.
Found on http://www.encyclo.co.uk/local/10003

Atomic Number

The number of protons in the nucleus
Found on http://ie.lbl.gov/education/glossary/glossaryf.htm

Atomic Number

The number of Protons within an Atom . E.g. Uranium-238 (92) contains 92 protons. Also gives the number of Electrons .
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atomic number

[n] - the order of an element in Mendeleyev`s table of the elements
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Atomic Number

The number of protons in the nucleus of an atom which determines its chemical properties.
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Atomic Number

The atomic number (Z) of an element is the number of protons each atom of that element has in its nucleus; e.g., Z = 17 for chlorine (17Cl).The atomic number was originally defined as an index describing the position of an element in the periodic table and it was not until 1913 that it was known that it was a unit of measurement. Click o...
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Atomic Number

Integral number of protons in the nucleus, defines the identity of element.
Found on http://www.encyclo.co.uk/local/20728

atomic number

(Z) The number of protons in an atomic nucleus. The atomic number and the element symbol are two alternate ways to label an element. In nuclide symbols, the atomic number is a leading subscript; for example, in 126C, the '6' is the atomic number.
Found on http://antoine.frostburg.edu/chem/senese/101/glossary/a.shtml

atomic number

Atomic number (Z) is a characteristic property of an element, equal to the number of protons in the nucleus.
Found on http://www.ktf-split.hr/periodni/en/abc/a.html

Atomic Number

is the number of protons in the nucleus of an atom. It is the whole number on the periodic chart. It is also the number of electrons in a neutral atom (where protons = electrons).
Found on http://www.chemicalglossary.net/definition/120-ATOMIC_NUMBER

Atomic Number

Number of protons in an element.
Found on http://www.chemicalglossary.net/definition/184-Atomic_Number

Atomic Number

the number of protons in the nucleus of an atom.
Found on http://www.chemicalglossary.net/definition/27-Atomic_Number

atomic number

Number of protons in an element.
Found on http://www.shodor.org/UNChem/glossary.html

atomic number

The number of protons in an atom
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Atomic Number

Specific to individual elements
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atomic number

<chemistry> 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) ...
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atomic number

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
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atomic number

(Z) a number expressive of the number of protons in an atomic nucleus, or the positive charge of the nucleus expressed in terms of the electronic charge.
Found on http://www.encyclo.co.uk/local/21001

atomic number

the number of a chemical element (q.v.) in the periodic system, whereby the elements are arranged in order of increasing number of protons in the ... [15 related articles]
Found on http://www.britannica.com/eb/a-z/a/120

Atomic Number

Number of protons in the nucleus of an atom.
Found on http://www.physicalgeography.net/physgeoglos/a.html

Atomic Number

The number of protons in the nucleus
Found on http://isotopes.lbl.gov/education/glossary/glossaryf.htm

Atomic Number

(symbolized Z) (R Numar Atomic)The number of protons in a nucleus. It determines the chemical properties of an element
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atomic number

The atomic number was originally defined (about 1865) simply as an index describing the position of an element in the periodic table. Not until 1913 was it known that the atomic number is actually a unit of measurement, equal to the number of electrons surrounding a neutral (uncharged) atom, and also to the number of protons in the nucleus.
Found on http://www.unc.edu/~rowlett/units/dictA.html

atomic number

order of an element in the periodic chemical classification, identified with the number of protons in the atomic nucleus NOTE - Z = A - N where A is the mass number and N the number of neutrons in the atomic nucleus.
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=111-14-18
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