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...ical elements|chemical element]], having the [[chemical symbol]] Al. Its [[atomic number]] (the number of [[proton]]s) is 13. It has a [[Atomic mass#Standard atomic

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...ical elements|chemical element]], having the [[chemical symbol]] Ac. Its [[atomic number]] (the number of [[proton]]s) is 89. It has a [[Atomic mass#Standard atomic

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...erial are called [[fission product]]s. The parent nuclei are of such high atomic number that they are [[radioactive]], although their decay, typically [[alpha part

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...d as a [[gas]] in its elemental form. It has the [[chemical symbol]] Cl, [[atomic number]] (number of [[protons]]) ''Z'' = 17, and a [[Atomic mass#Standar

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...ntal form. It has the [[chemical symbol]] K (from the Latin ''kalium''), [[atomic number]] (number of [[protons]]) ''Z'' = 19, and a [[Atomic mass#Standar

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[[Beryllium]], an element with a low-Z (atomic number), is an effective reflector of [[neutron]]s; by surrounding a [[fission dev

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| [[Atomic number|Atomic No.]]

A white soft [[chemical element]] with the [[chemical symbol]] La and the [[atomic number]] 57; belongs to the [[rare earth metal]]s; namesake of the [[lanthanides]]

...ical elements|chemical element]], having the [[chemical symbol]] Fm. Its [[atomic number]] (the number of [[proton]]s) is 100. It has a [[Atomic mass#Standard atomi

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...tal form. It has the [[chemical symbol]] Fe (from the Latin ''ferrum''), [[atomic number]] (number of [[protons]]) ''Z'' = 26, and a [[Atomic mass#Standar

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Auto-populated based on [[Special:WhatLinksHere/Atomic number]]. Needs checking by a human.

...matter)|solid]] in its elemental form. It has the [[chemical symbol]] U, [[atomic number]] (number of [[protons]]) ''Z'' = 92, and a [[Atomic mass#Standard atomic w

...ical elements|chemical element]], having the [[chemical symbol]] Ta. Its [[atomic number]] (the number of [[proton]]s) is 73. It has a [[Atomic mass#Standard atomic

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...tal form. It has the [[chemical symbol]] Cu (from the Latin ''cuprum''), [[atomic number]] (number of [[protons]]) ''Z'' = 29, and a [[Atomic mass#Standar

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The '''atomic number''' of a chemical [[elements|element]] (atomic species) is the number of [[p ...elements#History|history of periodic table]]). The first 94 elements, with atomic number 1 ≤ ''Z'' ≤ 94, appear in nature, although the elements with ''Z'' =

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...ical elements|chemical element]], having the [[chemical symbol]] Es. Its [[atomic number]] (the number of [[proton]]s) is 99. It has a [[Atomic mass#Standard atomic

...l form. It has the [[chemical symbol]] Ag (from the Latin ''argentum''), [[atomic number]] (number of [[protons]]) ''Z'' = 47, and a [[Atomic mass#Standar

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<!--[[Atomic Number]]: 15<br />

...ical elements|chemical element]], having the [[chemical symbol]] Tc. Its [[atomic number]] (the number of [[proton]]s) is 43. It has a [[Atomic mass#Standard atomic ...43.98/index.html Technetium Isotope data].</ref> Technetium has the lowest atomic number of the chemical elements that lack a stable isotope.

...atter)|solid]] in its elemental form. It has the [[chemical symbol]] Li, [[atomic number]] (number of [[proton]]s) ''Z''&nbsp;=&nbsp;3, and a [[Atomic mass#Standard

...ical elements|chemical element]], having the [[chemical symbol]] Sc. Its [[atomic number]] (the number of [[proton]]s) is 21 and its [[Atomic mass#Standard atomic w ...e]], correctly identified the molecular mass of the isolated oxide and the atomic number of the new element.<ref name=Nilson/> Nilson reported that scandium was equ

...ical elements|chemical element]], having the [[chemical symbol]] At. Its [[atomic number]] (the number of [[proton]]s) is 85. It has a [[Atomic mass#Standard atomic

...ation, such as [[X-ray]]s. In general, materials with a low-Z (i.e., low [[atomic number]], such as [[beryllium]] or [[hydrogen]]) restrict the flow of particles (e

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For convenience, sometimes the [[atomic number]]&mdash;which is already implied by the chemical symbol&mdash;is added as a

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...matter)|solid]] in its elemental form. It has the [[chemical symbol]] B, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;5, and a [[Atomic mass#Standard

...nd as a [[gas]] in its elemental form. It has the [[chemical symbol]] N, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;7, and a [[Atomic mass#Standard

...matter)|solid]] in its elemental form. It has the [[chemical symbol]] S, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;16, and a [[Atomic mass#Standar

...atter)|solid]] in its elemental form. It has the [[chemical symbol]] Np, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;93, and its longest-lived isoto

...e the same charge but differ in mass. For example, the element [[carbon]] (atomic number ''Z'' = 6, i.e., 6 protons) has two stable isotopes and one radioactive&mda ...of the most stable isotope. CS stands for chemical symbol. ''Z'' is the [[atomic number]]. See [[Chemical elements|here]] for a list of the full names of the eleme

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...cally neutral particles, [[neutron]]s. The number of protons defines the [[atomic number]], and the total number of protons and neutrons defines the [[atomic mass]] For example, [[uranium]], with an atomic number of 92, has the relatively stable isotope ²³⁸U with a half-life o

...matter)|solid]] in its elemental form. It has the [[chemical symbol]] C, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;6, and a [[Atomic mass#Standard

...tron configurations of all natural elements is given below in increasing [[atomic number]]. The following table is a linear form of the [[Periodic table of elements

Nuclei that have an even mass number and an even atomic number do not exhibit nuclear magnetic resonance, e.g., O-16, C-12.

For instance, the neon atom (atomic number ''Z'' = 10) has the electronic configuration (''n'' = 1 and ''n'' = 2 shell

...[[proton]]s found in their [[nucleus (chemistry)|nuclei]], the so-called [[atomic number]]. So far, 118 elements are known to exist either by producing them artific ...rring to columns). In the table, elements are sorted in ascending order of atomic number. The physical state of matter that they exist in at a temperature of 273.15

...ical elements|chemical element]], having the [[chemical symbol]] Se. Its [[atomic number]] (the number of [[proton]]s) is 34. It has a [[Atomic mass#Standard atomic

...atter)|solid]] in its elemental form. It has the [[chemical symbol]] Ca, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;20, and a [[Atomic mass#Standar

...nd as a [[gas]] in its elemental form. It has the [[chemical symbol]] O, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;8, and a [[Atomic mass#Standard ...ing the eighth position in the [[Periodic table of elements]], i.e., its [[atomic number]] ''Z'' is eight. Atomic oxygen is very reactive, so that the element does

...eutral) these atoms carry positive charge ''e(Z-1)'', where ''Z'' is the [[atomic number]] of the atom and ''e'' is the [[elementary charge]]. A better&mdash;but ne * ''Z'' is the [[atomic number]] (charge of the nucleus in unit ''e''; number of [[proton]]s in the nucleu

...X-ray|X-rays]] diffraction and structural analyses and the assignment of [[atomic number|atomic numbers]] to the elements, successively leading to a better systemat

...it)|fermi]], 10^&minus;13 cm), in the [[transuranic element]] of atomic number 100 ([[fermium]]), in a class of elementary particles ([[fermion]]s), in a

'''Iodine''', chemical symbol '''I''', is a [[chemical element]] with [[atomic number]] 53 that is typically a [[solid]] in its elemental form but is easily [[su

...atter)|solid]] in its elemental form. It has the [[chemical symbol]] Pu, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;94, and its longest-lived isoto ...called [[transuranic element]]s whose atomic number is higher than 92, the atomic number of [[uranium]]. It is named after the dwarf planet [[Pluto (dwarf planet)|P

...atter)|solid]] in its elemental form. It has the [[chemical symbol]] Co, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;27, and a [[Atomic mass#Standar

...coupling is useful mainly for the lighter atoms, roughly for atoms with [[atomic number]] less than 57. For heavier atoms [[j-j coupling]] gives a better approxima

<center> The [[atomic number]] ''Z'' is between brackets</center>

...ear fuel consists of [[fissile isotope]]s, atoms of [[isotope]]s of high [[atomic number]] and [[Atomic mass|mass]] which can readily undergo fission to produce a n

...pty space. The number of protons contained in the nucleus determines the [[atomic number]] and in turn which [[element]] it is classified as. The number of neutrons

...color, the atomic mass, the element's class, the element's symbol, or the atomic number. In other words, the user of the Elem Infobox template cannot change those

...ist of elements by symbol|by symbol]], and by [[List of elements by number|atomic number]] are also available. In addition, several [[isotope]]s of an element may e

...ury]] (Z=80), and all the other chemical elements, thus each have a unique atomic number, specified in tables below. ...as will be discussed below, many species of atoms, each with their unique atomic number, exist in their natural state as collections, or mixtures, of atoms with id

...ist of elements by symbol|by symbol]], and by [[List of elements by number|atomic number]] are also available. In addition, several [[isotope]]s of an element may e

...up>6</sup>), for a total of ten. With 10 balancing protons in the nucleus (atomic number, Z=10), that characterizes neon, an atom with a 'closed', or 'complete', se

'''Cadmium''' is a [[chemical element]] that has the symbol '''Cd''' and [[atomic number]] 48. A relatively rare, soft, bluish-white, toxic [[transition metal]], ca

...]. When this occurs, the atom’s [[atomic mass]] decreases by 4 units and [[atomic number]] decreases by 2.

...l (CS), the scientific name (with the common name, if applicable), and the atomic number (Z).

...nd as a [[gas]] in its elemental form. It has the [[chemical symbol]] H, [[atomic number]] (number of [[protons]]) ''Z'' = 1, and a [[Atomic mass#Standard atomic we

...s a [[Solid_(state_of_matter)|solid]]. It has the [[chemical symbol]] P, [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;15, and a [[Atomic mass#Standar

...&minus;''q'' and the charge of a nucleus, characterized uniquely by its [[atomic number]] ''Z'', is ''Zq''. Electrons and nuclei are, to a very good approximation ...'_i is the mass of nucleus ''i'', ''Z''_''i'' is the [[atomic number]] of nucleus ''i'', and ''m''_e is the mass of the electron. Th

...(Gorin 1996), that the elements' properties recur as functions of their [[Atomic number|atomic numbers]] (number of protons in their atomic nuclei), which order sl ...], whose work led to refining the periodic law to reflect an ordering by [[atomic number]] &mdash; the number of protons in the element's nucleus &mdash; instead of

...et rule is a simple rule that describes the ''valency'' of light atoms ([[atomic number]] ''Z'' &le; 18, first and second row of the periodic system). The valency

'''Phosphorus''' is a chemical [[element]] with the [[atomic number]] Z = 15. Unlike other elements in group VA of the [[Periodic table of elem

...lements|chemical element]], having the [[chemical symbol]] '''Po'''. and [[atomic number]] 84. A rare radioactive [[metalloid]], polonium is chemically similar to [

...al form. It has the [[chemical symbol]] Pb (from the Latin ''plumbum''), [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;82, and a [[Atomic mass#Standar

...n alcohol (OH) and an amine (NH₂). The alcohol has the higher [[atomic number]], and takes priority over the amine. The suffix for an alcohol ends in "ol

...nerated the neutrons, was compressed by explosives, composed of low-Z (low atomic number) elements that are good neutron absorbers. Note the neutron absorbed in the merge, and implode, the resulting high-atomic number

#third CAARS to detect material with high atomic number (Z, number of protons in an atom’s nucleus) based on the principle that Z

...in ''aurum''; the adjective ''auric'' refers to something made of gold), [[atomic number]] (number of [[protons]]) ''Z''&nbsp;=&nbsp;79, and a [[Atomic mass#Standar

Nuclei that have an even mass number and an even atomic number do not exhibit nuclear magnetic resonance, e.g., O-16, C-12.

...of electrons ''q'' = &minus;1, while a nucleus has ''q'' equal to its [[atomic number]] ''Z''. The quantity ''r''_''ij'' is the distance between part

...dit}}<br/>|}}Atomic structure of the predominant isotope of a carbon atom: atomic number, Z=6; atomic mass = 12. Nucleus contains six protons (6p+) and six neutrons

...|right|450px|Atomic structure of the predominant isotope of a carbon atom: atomic number, Z=6; atomic mass = 12. Nucleus contains six protons (6p+) and six neutrons