Template:Infobox caesium/sandbox

, ₀₀
in the periodic table
	— ← → —
Isotopes of v; e;
	Template:infobox isotopes does not exist
	File:Symbol category class.svg [[:Category:\|Category:]]; view; talk; edit; \| references

Caesium, ₅₅Cs
	Some pale gold metal, with a liquid-like texture and lustre, sealed in a glass ampoule
Caesium
Pronunciation	/ˈsiːziəm/ (SEE-zee-əm)
Alternative name	cesium (US)
Appearance	pale gold
Standard atomic weight Ar°(Cs)
	132.90545196(6)
Caesium in the periodic table
	xenon ← caesium → barium
Atomic number (Z)	55
Group	group 1: hydrogen and alkali metals
Period	period 6
Block	s-block
Electron configuration	[Xe] 6s1
Electrons per shell	2, 8, 18, 18, 8, 1
Physical properties
Phase at STP	solid
Melting point	301.7 K (28.5 °C, 83.3 °F)
Boiling point	944 K (671 °C, 1240 °F)
Density when liquid (at m.p.)	1.843 g/cm3
Critical point	1938 K, 9.4 MPa
Heat of fusion	2.09 kJ/mol
Heat of vaporization	63.9 kJ/mol
Molar heat capacity	32.210 J/(mol·K)
Atomic properties
Oxidation states	−1, +1 (a strongly basic oxide)
Electronegativity	Pauling scale: 0.79
Ionization energies	1st: 375.7 kJ/mol ; 2nd: 2234.3 kJ/mol ; 3rd: 3400 kJ/mol ; ;
Atomic radius	empirical: 265 pm
Covalent radius	244±11 pm
Van der Waals radius	343 pm
	Color lines in a spectral rangeSpectral lines of caesium
Other properties
Natural occurrence	primordial
Crystal structure	body-centered cubic (bcc) Bodycentredcubic crystal structure for caesium
Thermal conductivity	35.9 W/(m⋅K)
Electrical resistivity	205 nΩ⋅m (at 20 °C)
Magnetic ordering	paramagnetic
Young's modulus	1.7 GPa
Bulk modulus	1.6 GPa
Mohs hardness	0.2
Brinell hardness	0.14 MPa
CAS Number	7440-46-2
History
Naming	from Latin caesius 'bluish grey', for its spectral colours
Discovery	Robert Bunsen and Gustav Kirchhoff (1860)
First isolation	Carl Setterberg (1882)
Isotopes of caesium v; e;
β−	134Ba
	File:Symbol category class.svg Category: Caesium; view; talk; edit; \| references

PTCaesium

Xe ← i'box Xe	^iso ₅₅Cs (E) infobox (E) isobox	→ Ba i'box Ba
File:Commons-logo.svg Commons File:Wikidata-logo.svg Wikidata:Q1108 File:Wiktionary-logo.svg Wiktionary Indexes in PT: § below · Page
v e

Data sets read by {{Infobox element}}
Name and identifiers	view edit
Symbol etymology (11 non-trivial)	view edit
Top image (caption, alt)	view edit
Pronunciation	view edit
Allotropes (overview)	view edit
Group (overview)	view edit
Period (overview)	view edit
Block (overview)	view edit
Natural occurrence	view edit
Phase at STP	view edit
Oxidation states	view edit
Spectral lines image	view edit
Electron configuration (cmt, ref)	view edit
Isotopes
Standard atomic weight	view edit
most stable isotope	view edit
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Wikidata *	view edit
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (3) · (this table: v )

References

↑ "Standard Atomic Weights: Caesium". CIAAW. 2013.
↑ Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.121. ISBN 1439855110.
↑ Dye, J. L. (1979). "Compounds of Alkali Metal Anions". Angewandte Chemie International Edition. 18 (8): 587–598. doi:10.1002/anie.197905871.
↑ "Magnetic susceptibility of the elements and inorganic compounds". Handbook of Chemistry and Physics (PDF) (87th ed.). CRC press. ISBN 0-8493-0487-3. Retrieved 2010-09-26.
↑ Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
↑ "NIST Radionuclide Half-Life Measurements". NIST. Retrieved 2011-03-13.
↑ ^7.0 ^7.1 ^7.2 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.

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ionization energy 2
ionization energy 3

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</syntaxhighlight>

{{Infobox element}}; labels & notes:
 
(Image)
 
 
 
GENERAL PROPERTIES
Name
Symbol
Pronunciation (data central)
 
Alternative name(s)
 
Allotropes
Appearance
<element> IN THE PERIODIC TABLE
Periodic table
 
 
 
Atomic number
Standard atomic weight (data central)
 
Element category (also header bg color)
 
 
(sets header bg color, over 'series='-color)
Group
 
 
Period
 
 
Block
 
 
Electron configuration
 
 
Electrons per shell
 
 
PHYSICAL PROPERTIES
(general note)
Color
Phase
 
 
Melting point
 
 
 
 
Boiling point
 
 
 
 
Sublimation point
 
 
 
 
Density [g/L at s.t.p.]
 
 
Density [kg/m3 at s.t.p.]
 
 
Density [g/cm3 near room temperature]
 
 
 [g/cm3 near r.t.], #2
 
 
 [g/cm3 near r.t.], #3
 
 
Density (liquid, melting point) [g/cm3]
 
 
Density (liquid, boiling point) [g/cm3]
 
 
Molar volume
Unit defaults to cm3/mol
 otherwise set unit prefix=d for dm3/mol (gases)
 
Triple point
 
 
 
 
 
 
 
Critical point
 
 
 
Heat of fusion
 
 
 
 
 
Heat of vaporization
 
 
Molar heat capacity
 
 
 
 
 
Vapor pressure
 
 
 
 
 
 
 
Vapor pressure
 
 
 
 
 
 
 
ATOMIC PROPERTIES

Electronegativity
 
 
Ionization energy
 
 
 
 
 
 
 
 
 
 
 
Atomic radius
 
 
 
 
 
Covalent radius
 
 
Van der Waals radius
 
 
MISCELLANEA
Crystal structure
 
 
 
Crystal structure
 
 
 
Speed of sound
 
 
 
 
 
 
 
 
Thermal expansion
 
 
 
 
 
Thermal conductivity
 
 
 
 
 
Thermal diffusivity
 
 
Electrical resistivity
 
 
 
 
 
 
 
 
 
Band gap
 
 
Curie point
 
 
Magnetic ordering
 
 
Tensile strength
 
 
Young's modulus
 
 
Shear modulus
 
 
Bulk modulus
 
 
Poisson ratio
 
 
Mohs hardness
 
 
 
 
 
Vickers hardness
 
 
Brinell hardness
 
 
CAS Number
 
 
HISTORY
Naming
Prediction
 
()
Discovery
 
()
First isolation
 
()
Discovery and first isolation (1 or 2 dates)
Named by
 
()
 
(History comment)
 
(wp:engvar)

Chemical element data sets[change]

Infobox element reads data from these lists (i.e., not by local parameter)

Data sets read by {{Infobox element}}
Name and identifiers	view edit
Symbol etymology (11 non-trivial)	view edit
Top image (caption, alt)	view edit
Pronunciation	view edit
Allotropes (overview)	view edit
Group (overview)	view edit
Period (overview)	view edit
Block (overview)	view edit
Natural occurrence	view edit
Phase at STP	view edit
Oxidation states	view edit
Spectral lines image	view edit
Electron configuration (cmt, ref)	view edit
Isotopes
Standard atomic weight	view edit
most stable isotope	view edit
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *	view edit
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (3) · (this table: v )

Main isotopes box[change]

As of 7 Jan 2023^[update], the "Main isotopes of <element>" tabular list will be read directly from the Isobox: "Infobox <element> isotopes". For example, {{Infobox uranium}} will read the table live from {{Infobox uranium isotopes}}.

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Main isotopes of uranium

Reused Main Isotopes table listed in Category:Infobox element isotopes templates (0).

Theoretical elements handling (E119) [change]

As of 1 Jan 2023^[update], elements E119 and higher are not discovered. These are called theoretical elements. They can have article and other content pages though. Incidentally, this concerns period 8 completely. For the Infobox <element>, their redirected pages do not count (are treated as: "R page does not exist").

Possible situations regarding articles & discovery, are:

"E118": E1–E118, discovered, existing full set, mentioned here for easy reference
"E119": E119, E120
"E121": E121, E122, E124, E126
"E127, E185": E123, E125, E127 ... Unbitrium Redirect: no article, no other content pages.

Creation of pages is governed by MOS:NONEWELEMENTS. This infobox must distinguish between three typical (exemplary) elements: E118 (regular element), E119 and E121.

Handling of these element infoboxes is hardcoded in the meta-infobox, set by |number= (Z).

Theoretical element: above-header shows

Theoretical element

Applied: when element is theoretical (E119 and higher).

No article "Isotopes of <element>": Header does not link

E119: Main isotopes of ununennium

E121: Main isotopes of unbiunium

Applied: E119, E120 do link, E121 and higher do not link.

No isotopes known, Isobox does not exist: local input, per Infobox. For example:

Transclusion of the isobox is suppressed (no redlink),

E119: |theoretical isotopes comment=Experiments and theoretical calculations

Applied: E119 and up: have no Isobox, so no isotopes lists is shown—at all. Instead, the parametertext is shown as present.

v t e Theoretical elements & period 8: Existing pages overview (conforms MOS as of 4 Jan 2023^[update])
Element			Content page					Notes
per	E	disc./ theor.	Page	Name	T: Infobox (E)	Isotopes of (E)	T: Isobox (E)	Page set pattern (4 Jan 2023)	note

⑦	E118 (Og)	disc.	Article	Oganesson, cat:E118 (0)	{{IB oganesson}}	Isotopes of E118, cat:Isotopes E118 (0)	{{Isobox oganesson}}	E118^{[Set 1]}	compare

⑧	E119 (Uue)	theor.	Article	Ununennium, cat:E119 (0)	{{IB ununennium}}	Isotopes of E119, cat:Isotopes E119 (0)	{{Isobox E119}}	E119^{[Set 2]}	period 8 start
⑧	E120 (Ubn)	theor.	Article	Unbinilium, cat:E120 (0)	{{IB unbinilium}}	Isotopes of E120, cat:Isotopes E120 (0)	{{Isobox E120}}	E119^{[Set 2]}
⑧	E121 (Ubu)	theor.	Article	Unbiunium, cat:E121 (0)	{{IB unbiunium}}	Isotopes of E121, cat:Isotopes E121 (0)	{{Isobox E121}}	E121^{[Set 3]}
⑧	E122 (Ubb)	theor.	Article	Unbibium, cat:E122 (0)	{{IB unbibium}}	Isotopes of E122, cat:Isotopes E122 (0)	{{Isobox E122}}	E121^{[Set 3]}
⑧	E123 (Ubt)	theor.	Article	Unbitrium, cat:E123 (0)	{{IB unbitrium}}	Isotopes of E123, cat:Isotopes E123 (0)	{{Isobox E123}}	E127^{[Set 4]}
⑧	E124 (Ubq)	theor.	Article	Unbiquadium, cat:E124 (0)	{{IB unbiquadium}}	Isotopes of unbiquadium R, cat:Isotopes E124 (0)	{{Isobox E124}}	E121^{[Set 3]}
⑧	E125 (Ubp)	theor.	Article	Unbipentium, cat:E125 (0)	{{IB unbipentium}}	Isotopes of E125, cat:Isotopes E125 (0)	{{Isobox E125}}	E127^{[Set 4]}
⑧	E126 (Ubh)	theor.	Article	Unbihexium, cat:E126 (0)	{{IB unbihexium}}	Isotopes of E126, cat:Isotopes E126 (0)	{{Isobox E126}}	E121^{[Set 3]}
⑧	E127 (Ubs)	theor.	Article	Unbiseptium, cat:E127 (0)	{{Infobox E127}}	Isotopes of E127, cat:Isotopes E127 (0)	{{Isobox E127}}	E127^{[Set 4]}
⑧	E128 (Ubo)	theor.	Article	Unbioctium, cat:E128 (0)	{{IB unbioctium}}	Isotopes of E128, cat:Isotopes E128 (0)	{{Isobox E128}}	E127^{[Set 4]}
⑧	E172 (Usb)	theor.	Article	Unseptbium, cat:E172 (0)	{{IB unseptbium}}	Isotopes of E172, cat:Isotopes E172 (0)	{{Isobox E172}}	E127^{[Set 4]}	End of period 8 ("NG")
⑧ ⑨	E127–E184		R					E127^{[Set 4]}	E127–E184 = 58 elements
⑨	E184 (Uoq)	theor.	redlink	Unoctquadium, cat:E184 (0)	{{Infobox E184}}	Isotopes of E184, cat:Isotopes E184 (0)	{{Isobox E184}}	E127^{[Set 4]}
⑨	E185 (Uop)	theor.	redlink	Unoctpentium, cat:E185 (0)	{{Infobox E185}}	Isotopes of E185, cat:Isotopes E185 (0)	{{Isobox E185}}	E185^{[Set 5]}
				cat:Elements (21)	cat:IB (E) (0) meta:{{IB element}}	cat:List of isotopes (E) (0)	cat:Isobox (E) (0) meta:{{Isobox (E)}}
Sets of existing pages, by exemplary element: ↑ E118 (Oganesson): Article, Infobox, Isotopes article, Isobox, eponymous category, isotopes categories (complete set, six pages). Discovered element, for reference. ↑ ^2.0 ^2.1 E119 (Ununennium): Article, Infobox, eponymous category, Isotopes article (but no big "§ List of isotopes" table). No Isobox. ↑ ^3.0 ^3.1 ^3.2 ^3.3 E121 (Unbiunium): Article, Infobox, eponymous category. ↑ ^4.0 ^4.1 ^4.2 ^4.3 ^4.4 ^4.5 ^4.6 E127 (Unbiseptium): R-article only, on systematical name. ↑ E185 (Unoctpentium): No article, no redirect. As of 4 Jan 2023^[update], conforms MOS:no new elements (no idle pages created; redirects for element names only)
Uue–Uoq (E119–E184) each have an article page by their systematic name. That is 66 article page. Six of these are content pages (articles), and 58 are a redirect. R: Redirects are non-content pages. Treated as non-existant page. E172 would be the end of period 8 ("noble gas") and E173 would be the beginning of period 9. {{Index by periodic table}} · Category:Hypothetical chemical elements (32)

Subtemplates[change]

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{{Infobox element/pronunciation}} (data)
{{Infobox element/standard atomic weight format}}
{{Infobox element/block format}}
{{Infobox element/periodic table}} (extends period 8 when atomic number ≥ 119. See {{Infobox ununennium}}).

Bare Periodic table, micro

English variant spellings (ENGVAR)[change]

All element articles and their infoboxes use IUPAC spelling of elements and compounds. Notably, that is aluminium, sulfur, caesium, not aluminum, sulphur, cesium. For other English variant words (vapor vs. vapour) the infobox reads |engvar=. The parameter should be set in the article, and has options: en-US (or blank; default), en-GB, en-OED.

parameter	en-US (default)	en-GB	en-OED
color	color	coloUr	coloUr
heat vaporization	vaporiZation	vaporiSation	vaporiZation
vapor pressure	vapor	vapoUr	vapoUr
ionization energy	ioniZation	ioniSation	ioniZation
crystal structure (list)	-centEred	-centred	-centred
... oxidation-state/comment	parenthesized	brackets	brackets

Note, what is shown in the infobox is not influenced by the parameter name spelling, nor its input value.

TemplateData[change]

TemplateData documentation used by VisualEditor and other tools

See a monthly parameter usage report for Template:Infobox caesium in articles based on its TemplateData.

TemplateData for Infobox caesium

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v t e Chemical element data sets
ID	{{Infobox element/symbol-to-name}} · ID overview {{Infobox element/symbol-to-Z}} {{Infobox element/Z-to-symbol}} {{Infobox element/symbol-to-QID}} {{Infobox element/symbol-to-symbol}} (symbol self-check, formatting)
Periodic table	{{Infobox element/symbol-to-group}} 1–18 · overview {{Infobox element/symbol-to-period}} ① –⑧ · overview {{Infobox element/symbol-to-block}} s-p-d-f-g {{Infobox element/symbol-to-symbol-NESW}} (neighbours in the PT)
Properties (overview)	{{Infobox element/symbol-to-metal-moid-nonmetal}} {{Infobox element/symbol-to-occurrence}} {{Infobox element/symbol-to-phase}} (state of matter) {{Infobox element/symbol-to-allotropes}} IB · overview {{Infobox element/symbol-to-electron-configuration}} (overview) {{Infobox element/symbol-to-term-symbol}} · (overview; as used) {{Infobox element/symbol-to-oxidation-state}} {{Infobox element/symbol-to-valence-group}}
Etymology	{{Infobox element/symbol-to-symbol-etymology}} (11x, non-trivial, overview)
enwiki	{{Infobox element/symbol-to-pagename}} {{Infobox element/symbol-to-shyphen-name}} {{Infobox element/symbol-to-pronunciation}} · overview {{Infobox element/symbol-to-article-quality}} (not in mainspace) {{Infobox element/symbol-to-odd-even}} (Z; to alternate table background)
Images	{{Infobox element/symbol-to-top-image}}, {{caption}}, {{alt text}} · overview {{Infobox element/symbol-to-spectral-lines-image}} {{Infobox element/symbol-to-zh}} (not mainspace) · ID overview {{Infobox element/symbol-to-pymol-color}} · {{PyMOL color}} (not in mainspace)
Isotopes	{{saw}} (overview, WD:s.a.w. comparing enwiki-wikidata) {{Infobox element/symbol-to-saw/year-changed}} {{Infobox element/symbol-to-most-stable-isotope}} (when not stable only)
File:Notification-icon-Wikidata-logo.svg Wikidata	{{Infobox element/symbol-to-electron-configuration}} (overview) [WD: (P8000)] {{Infobox element/symbol-to-term-symbol}} · (Overview; as used) {{Infobox element/symbol-to-oxidation-state}} [WD: (P1121)] {{Infobox element/symbol-to-saw}} standard atomic weight (overview; s.a.w. comparing enwiki-wikidata) [WD: (P2067)] {{IDs}} · {{Pronunciation}} [WD: (P487)] {{elconfig}} [WD: (P8000)] {{Infobox element/symbol-to-zh}} · (ID overview) [WD: (P487)] — not in mainspace
Overviews	{{IDs}} · {{Pronunciation}} {{Properties}} {{elconfig}} s.a.w. overview · (s.a.w. compare enwiki–wikidata) period 8 overview (E119; theoretical element pages) {{Oxidation state}} · {{List of oxidation states of the elements}} Infobox formatting overview: group, period, block
Data hardcoded (not using these datalists)	{{element cell}} etc., in articles: element cell articles, cell-linked, cell-large, cell-property articles: {{List of elements}} infobox references: List of References (like m.p., b.p.)
nav	{{Infobox element/symbol-to--overview1}}
Category:Infobox element data sets (3) (overviews) · Category:Infobox element templates by element (0) · All pages beginning with Template:Infobox element/symbol-to- · All pages beginning with Template:Infobox element/ meta templates: {{Infobox element}} · {{Infobox isotopes (meta)}}

Template:Infobox caesium/sandbox

References

Parameters[change]

Chemical element data sets[change]

Main isotopes box[change]

Theoretical elements handling (E119) [change]

Subtemplates[change]

English variant spellings (ENGVAR)[change]

TemplateData[change]

References

See also[change]

Tracking categories[change]

Index by periodic table[change]