A heaviest gas. A rediyoaktif Radon gas: Properties, halaye, da rabin-rai

Gas - daya daga cikin jihohin tari na abu. A gas ba a cikin iska, ba kawai a duniya, amma a cikin sarari. Su suna hade da sauƙi, weightlessness volatility. A mafi sauki ne hydrogen. Kuma abin da ke cikin heaviest gas? Bari mu sami shi.

A heaviest gas

The kalmar "gas" ya zo daga kalmar Helenanci "hargitsi." Its barbashi ne mobile da loosely da alaka da juna. Su matsawa da ka, ciko duk samuwa sarari. A gas iya zama mai sauki kashi da kuma kunshi sunadaran daya abu da kuma na iya zama wani fili da dama.

A sauki nauyi gas (a dakin da zazzabi) ne Radon, ta matauni taro 222 g / mol. Shi ne rediyoaktif kuma shi ne cikakken colorless. Bayan an dauke mafi tsanani xenon, wani atomic taro na 131 g / mol. Sauran nauyi gas ne mahadi.

Daga cikin inorganic mahadi daga cikin heaviest gas a zazzabi na 20 ^{° C} ne tungsten fluoride (VI). Its matauni taro ne 297,84 g / mole, da yawa - 12.9 g / l. Karkashin al'ada yanayi, shi ne wani colorless iskar gas, smokes, kuma shi ne blue a cikin m iska. Tungsten hexafluoride ne sosai aiki, an sauƙi tuba a cikin ruwa lokacin da sanyaya.

Radon

Opening na gas ya faru a lokacin da binciken zamani domin nazarin radioactivity. A lokacin da Lalacewar wasu abubuwa, masana kimiyya sun sha nuna wasu abu jefarwa da sauran barbashi. Rutherford ya kira shi emanation.

Haka, an gano da thorium emanation - Thoron, radium - Radon, actinium - actinon. Daga baya an gano cewa, duk wadannan emanations ne isotopes daga cikin wannan kashi - wani inert gas. Robert Gray kuma Uilyam Ramzay farko ware shi a cikin tsarki tsari da kuma sanya ma'aunai na da kaddarorin.

A lokaci-lokaci tebur Radon ne wani kashi daga cikin 18th kungiyar na atomic lambar 86. An located tsakanin Faransa da kuma astatine. Karkashin al'ada yanayi, abu ne mai gas, yana da wani dandano, kamshi da kuma launi.

Iskar gas 7.5 sau denser fiye da iska. Yana dissolves a ruwa ne mafi alhẽri daga da sauran daraja gas. A kaushi, wannan adadi kara ƙaruwa. Daga cikin dukkan rare gas Shi ne mafi aiki, sauƙi hulda da sunadarin flourine da oxygen.

A rediyoaktif Radon gas

Daya daga cikin kaddarorin da rabi - da radioactivity. A kashi na isotopes talatin hudu na halitta sauran - wucin gadi. Dukan su ne m, kuma yiwuwa ga rediyoaktif lalace. A rabin-rai na Radon, mafi daidai, ta fi barga isotope, shi ne 3.8 kwanaki.

Saboda sosai rediyoaktif gas yana da haske. A gaseous da ruwa abu ne ya haskaka a blue. The m Radon ta sauya palette daga rawaya zuwa ja lokacin da sanyaya zuwa nitrogen yanayin zafi - game -160 ° ^C.

Radon iya zama sosai guba ga mutum. nauyi ba maras tabbas kayayyakin kamar polonium, gubar, bismuth sakamakon da rarrabuwa. Suna sosai talauci excreted. Magance da kuma tara wadannan abubuwa guba jiki. Bayan shan taba, Radon ne na biyu mafi kowa hanyar huhu da ciwon daji.

A wuri da kuma yin amfani da Radon

A heaviest gas ne daya daga cikin rare duniya abubuwa bawo. A yanayi, Radon ne wani ɓangare daga ores dauke da uranium-238, thorium-232, uranium-235. A su lalata shi ne saki, fadowa cikin yanayi da kuma hydrosphere na duniya.

Radon accumulates a cikin kõgi, kuma tẽku ruwa, shuke-shuke da ƙasa a cikin kayan gini. A yanayi, da abun ciki qara su girgizar kasa da kuma volcanic aiki, da hakar daga cikin phosphates da geothermal ikon shuke-shuke.

Da taimakon wannan gas ne tectonic laifinsu, adibas na thorium da uranium. Ana amfani da a noma don kunna feed dabbobi. Radon da ake amfani a metallurgy, nazarin ruwan karkashin kasa hydrology, magani rare Radon baho.