Témbongkeun sumber pikeun Gas mulya

{| align="right" style="margin:0 0 1em 1em;"
! [[Golongan tabel periodik|Golongan]]
! 18
|-
! [[Periode tabel periodik|Periode]]
|-
! [[Unsur periode 1|1]]
| {{element cell| 2|Hélium|He| |Gas|Gas mulya|Primordial}}
|-
! [[Unsur periode 2|2]]
| {{element cell|10|Néon|Ne| |Gas|Gas mulya|Primordial}}
|-
! [[Unsur periode 3|3]]
| {{element cell|18|Argon|Ar| |Gas|Gas mulya|Primordial}}
|-
! [[Unsur periode 4|4]]
| {{element cell|36|Kripton|Kr| |Gas|Gas mulya|Primordial}}
|-
! [[Unsur periode 5|5]]
| {{element cell|54|Sénon|Xe| |Gas|Gas mulya|Primordial}}
|-
! [[Unsur periode 6|6]]
| {{element cell|86|Radon|Rn| |Gas|Gas mulya|Natural radio}}
|-
! [[Unsur periode 7|7]]
| {{element cell|118|Ununoctium|Uuo| |Gas|Gas mulya|Undiscovered|Ununoctium|#ecfefc}}
|}
'''Gas mulya''' (''noble gases'') mangrupa [[unsur kimia]] dina [[golongan tabel periodik|golongan 18]] dina [[tabel periodik]]. [[Dérét kimia]] ieu ngawengku [[hélium]], [[néon]], [[argon]], [[kripton]], [[sénon]], jeung [[radon]].

== Étimologi ==
Gas mulya saméméhna katelah '''[[gas inert]]''', tapi lajeng diganti ku sabab aya sababaraha unsur nu sok ngilu aub dina [[réaksi kimia]]. Istilah séjénna nu kungsi dipaké nyaéta '''gas jarang''', tapi teu cocog sabab [[argon]] téh kadarna 0,93% v/v atawa 1,29% b/b dina [[atmosfir]] [[Bumi]].

Ngaran '''noble gases'' (gas mulya) téh niron tina ''noble metal'' ([[logam mulya]]) nu sarua teu réaktif, sarta boga sipat gedé ajénna, teu [[tai hiangan]], sarta sok dipatalikeun jeung kaménakan.

== Kimia ==

Dina kaayaan baku, gas mulya téh ujudna gas [[monatomik]], [[réaktivitas]]na handap pisan, malah mah can aya sanyawaan hélium atawa néon nu kungsi dijieun sacara konvénsional. Di laboratorium, sénon jeung kripton némbongkeun ayana réaktivitas (tingal [[sanyawaan gas mulya]].

Handapna réaktivitas gas mulya téh kusabab "lengkep kulit valénsi"na, sahingga teu condong ngaleupaskeun/narima [[éléktron]]. Gas mulya mibanda énérgi ionisasi nu luhur. 
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Because of their unreactivity, the noble gases were not discovered until [[1868]], when helium was detected [[spectrograph|spectrographically]] in the [[Sun]]. The isolation of helium on Earth had to wait until [[1895]]. The noble gases have very weak inter-atomic forces of attraction, and consequently very low [[melting point]]s and [[boiling point]]s. This is why they are all [[gas]]es under normal conditions, even those with larger [[atomic mass]]es than many normally solid elements.

'''Ununoctium'''

No [[isotopes]] with 118 protons have yet been detected in nature or synthesized in the laboratory. In the meantime, the systematic name "[[ununoctium]]" is used to refer to this hypothetical element. If discovered, ununoctium is expected to be another noble gas, filling the empty space in the [[periodic table]] beneath radon. All its isotopes are likely to be [[radioactive]] with a very short [[half-life]] in the millisecond range.

== Applications ==
One of the most commonly encountered uses of the noble gases in everyday life is in lighting. Argon is often used as a suitable safe and inert atmosphere for the inside of filament [[light bulb]]s, and is also used as an inert atmosphere in the synthesis of air and moisture sensitive compounds (as an alternative for [[nitrogen]]). Some of the noble gases glow distinctive colours when used inside lighting tubes ([[neon light]]s). Helium, due to its unreactivity (compared to flammable [[hydrogen]]) and lightness, is often used in [[blimp]]s and [[balloon]]s.

== Physical Properties ==
{{start box}}
| align = center | Property

|-
| align = center | Element Number
| align = center | 2
| align = center | 10
| align = center | 18
| align = center | 36
| align = center | 54
| align = center | 86
| align = center | 118
|-
| align = center | Element Name
| align = center | [[Helium]]
| align = center | [[Neon]]
| align = center | [[Argon]]
| align = center | [[Krypton]]
| align = center | [[Xenon]]
| align = center | [[Radon]]
| align = center | [[Ununoctium]]
|-
| align = center | Normal Density
| align = center | 0.1786
| align = center | 0.9002
| align = center | 1.7818
| align = center | 3.708
| align = center | 5.851
| align = center | 9.97
| align = center | N/A
|-
| align = center | Atomic Mass
| align = center | 4.00
| align = center | 20.2
| align = center | 39.9
| align = center | 82.92
| align = center | 130.2
| align = center | 222.4
| align = center | N/A
|-
| align = center | Boiling Pt. (°C)
| align = center | -268.83
| align = center | -245.92
| align = center | -185.81
| align = center | -151.7
| align = center | -106.6
| align = center | -62
| align = center | N/A
|-
| align = center | Melting Pt. (°C)
| align = center | -272
| align = center | -248.52
| align = center | -189.6
| align = center | -157
| align = center | -111.5
| align = center | -71
| align = center | N/A

{{end box}}-->

== Sumber rujukan ==
* ''[[:en:Noble gas|Noble gas]]'', Wikipédia édisi basa Inggris (7 Agustus 2006)

== Tumbu kaluar ==
* [http://www.osu.edu/researchnews/archive/noblegas.htm Émbaran pérs] {{Webarchive|url=https://web.archive.org/web/20030802212953/http://www.osu.edu/researchnews/archive/noblegas.htm |date=2003-08-02 }} Universitas Nagara Bagian Ohio ngeunaan sanyawaan uranium jeung gas mulya.
* [http://www.uigi.com/rare_gases.html Rare Gases - Neon, Krypton, Xenon Properties, Uses, Applications]
* [http://www.uigi.com/argon.html Argon Ar Properties, Uses, Applications]
* [http://www.scienceaid.co.uk/chemistry/periodictable/noblegases.html Science Aid: Noble gases] {{Webarchive|url=https://web.archive.org/web/20070303113837/http://www.scienceaid.co.uk/chemistry/periodictable/noblegases.html |date=2007-03-03 }} Pedaran basajan ngeunaan pasipatan jeung guna gas mulya

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[[Kategori:Gas mulya| ]]