Pengguna:Agung.karjono/Bak pasir/Timbal(II) nitrat: Perbedaan revisi

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{{Short description|ChemicalUnsur elementkimia withdengan atomicnomor numberatom 16}}
{{About|the chemical element}}
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{{Use dmy dates|date=MarchMaret 2016}}
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{{Unsur|Belerang|S|16}} Unsur ini [[Kelimpahan unsur|melimpah]], [[Valensi|multivalen]] dan [[nonlogam]]. Pada [[Temperatur dan tekanan standar|kondisi normal]], atom-atom belerang membentuk molekul oktatomik siklik dengan dengan rumus kimia [[Oktasulfur|S<sub>8</sub>]]. Unsur belerang berwarna kuning terang, berbentuk [[kristal]] padat pada suhu ruang.
'''Sulfur''' ([[Sulfur#Spelling and etymology|in British English]], '''sulphur''') is a [[chemical element]] with the [[Symbol (chemistry)|symbol]]&nbsp;'''S''' and [[atomic number]]&nbsp;16. It is [[abundance of the chemical elements|abundant]], [[valence (chemistry)|multivalent]] and [[nonmetal]]lic. Under [[standard conditions for temperature and pressure|normal conditions]], sulfur atoms form cyclic octatomic molecules with a chemical formula [[octasulfur|S<sub>8</sub>]]. Elemental sulfur is a bright yellow, [[crystal]]line solid at room temperature.
 
SulfurBelerang isadalah theunsur tenthpaling mostumum commonke-10 element(berdasarkan bymassa) massdi inalam the universesemesta, anddan thepaling fifthumum mostke-5 commondi on EarthBumi. ThoughMeskipun sometimeskadang-kadang foundditemukan indalam pure,bentuk [[nativemurni element minerals|native]]dan formalami, sulfurbelerang ondi EarthBumi usuallybiasanya occursterdapat assebagai [[sulfide minerals|sulfidesulfida]] anddan [[sulfate{{Ill|mineral minerals]]sulfat|en|Sulfate mineral}}. BeingSebagai abundantunsur inyang nativemelimpah form,dalam sulfurbentuk wasalaminya, knownbelerang indikenal ancientsejak timeszaman kuno, beingdisebutkan mentionedpenggunaannya fordi its uses inera [[ancient India kuno]], [[ancientYunani Greecekuno]], [[historySejarah of ChinaTiongkok#AncientZaman Chinakuno|ChinaTiongkok kuno]], anddan [[ancientMesir Egypt|Egyptkuno]]. HistoricallyDahulu anddan indalam literatureliteratur, sulfurbelerang isjuga alsodisebut calledsebagai '''''brimstone''''',<ref name=Greenwd/> whichyang meansberarti "burningbatu stonebakar".<ref>{{cite EB1911 |wstitle=Brimstone |volume=4 |page=571}}</ref> TodaySekarang, almosthampir allseluruh belerang elemental sulfurdiproduksi issebagai producedproduk assamping adari byproductpenyingkiran ofkontaminan removingbelerang sulfur-containing contaminants fromdari [[natural gas alam]] anddan [[petroleumminyak bumi]]. ThePenggunaan greatestkomersial commercialterbesar useunsur ofini theadalah element is the production ofproduksi [[sulfuricasam acidsulfat]] for sulfate and phosphateuntuk [[fertilizerpupuk]]s sulfat dan fosfat, andserta otherproses chemicalkimiawi processeslainnya. TheUnsur elementbelerang sulfurdigunakan is used indalam [[matchkorek api]]es, [[insecticideinsektisida]]s, anddan [[fungicidefungisida]]s. ManyBanyak sulfursenyawa compoundsbelerang areberbau odoriferousbusuk, anddan thebau smellsgas ofalam, odorizedbau natural gassigung, skunkjeruk scentbali, grapefruit,dan andbawang garlicputih aredisebabkan dueoleh tosenyawa [[Senyawa organosulfur|organosulfur]] compounds. [[HydrogenHidrogen sulfidesulfida]] givesmemberikan thebau characteristickhas odorpada totelur rottingbusuk eggsdan andproses otherbiologis biological processeslainnya.
 
SulfurBelerang is anadalah [[mineralMineral (nutrientnutrisi)|essentialunsur elementpenting]] foruntuk allsemua lifekehidupan, but almosttetapi alwayshampir inselalu thedalam formbentuk ofsenyawa [[Senyawa organosulfur compounds|organosulfur]] compoundsatau orsulfida metal sulfideslogam. ThreeTiga [[aminoasam acidamino]]s ([[cysteineSisteina|sistein]], [[{{Ill|sistin|en|cystine]]}}, anddan [[methionineMetionina|metionin]]) anddan twodua vitamins[[vitamin]] ([[biotin]] anddan [[thiamineTiamina|tiamin]]) areadalah organosulfursenyawa compoundsorganosulfur. ManyBanyak [[cofactorKofaktor (biochemistrybiokimia)|cofactorskofaktor]] alsojuga containmengandung sulfurbelerang, includingtermasuk [[glutathioneglutation]], [[{{Ill|thioredoksin|en|thioredoxin]]}}, anddan [[{{Ill|Protein besi–belerang|en|iron–sulfur protein]]sproteins}}. [[DisulfideDisulfida]]s, S–Sikatan bondsS–S, confermemberi mechanicalkekuatan strengthmekanis anddan insolubility of theketaklarutan protein [[keratin]], foundyang ditemukan indi outerkulit skinluar, hairrambut, anddan feathersbulu. SulfurBelerang isadalah onesalah ofsatu theunsur corekimia chemicalinti elementsyang neededdibutuhkan foruntuk fungsi [[biochemicalbiokimia]] functioning and is an elementaldan [[macronutrientMakronutrien|unsur hara makro]] forbagi allsemua livingorganisme organismshidup.
 
==Characteristics==