आस्मियम  हिन्दी देवनागरी में पढ़ें।

asmiyam plaitinam samooh ki chhah dhatuon men se ek hai aur in sabase adhik dushprapy hai. isako sabase pahale tenant ne 1804 men asmiiridiyam se prapt kiya. asmiiridiyam ko sodiyam kloraid ke sath klorin gais ki dhara men pighalane par asmiyam tetrakloraid (asaklae4) banata hai jo udakar ek jagah ekatr ho jata hai. isaki amoniyam kloraid ke sath pratikriya karane par (naha4)2 asaklo6 ban jata hai, jisako vayu ki anupasthiti men tapt karane par asmiyam dhatu prapt hoti hai (snket asOs; paramanubhar 190; paramanusnkhya 76).

isake mukhy praptisthan roos, tesameniya tatha dakshin aphrika hain. yah gyat padarthon men sabase bhari hai. isaka apekshik ghanatv 22.5 hai tatha yah 2700° sen. par pighalati hai. yah atynt kathor dhatu hai aur vikar ki kathorata ki nam ke anusar isaki kathorata lagabhag 400 hai. isaki vidyutiy vishisht pratirodhakata 8.8 hai. shuddh dhatu n garm avastha men aur n thndi men vyavaharayogy hai. hava men garm karane par isaka udanashil aksaid asau4 ban jata hai. is dhatu par kisi avakarak aml ka koee prabhav nahin hota tatha amlaraj bhi sadharan tap par isapar koee pratikriya nahin karata. yah plaitinam, iridiyam tatha rutheniyam dhatuon ke sath badi sugamata se mishradhatu bana leti hai jo atyadhik kathor hoti hai. isako plaitinam men ath pratishat tak milakar kam men laya ja sakata hai. in mishranon se vastuen choorn dhatukarmiki (paudar metalarji) ki ritiyon se nirmit ki jati hain. asmiyam ki snyojakata 2, 3, 4, 6, tatha 8 hoti hai. isake yaugik asaklo3klo4,asaklo6 tatha asaklo8 banae ja sakate hain. asau4 bahut hi udanashil tatha vishakt padarth hai.[1]

yah dhatu sarvapratham sadharan vidyuth‌ balbon (inakaindisent ilektrik balbon) men prayukt ki gee, parntu yah bahut hi moolyavanh‌ thi aur isase ek vashp nikalata tha. isalie shighr hi isaki jagah sasti aur adhik labhadayak dhatuon ka upayog hone laga. ati sookshm vibhajit dhatu utprerak ka kam karati hai. as aur is dhatu ka sabase mahatvapoorn yaugik hai. yah autik abhirnjak (histolaaujikal sten) ke tatha ungali ki chhap lene ke kam ata hai. parakloret ki upasthiti men klaret ko nikalane men bhi isaka prayog hota hai. is dhatu ka upayog sabase kathor mishradhatuon ke banane men hota hai. ye mishradhatuen bahumooly aujaron ke bharu (beyaring) banane men aur asmiyam-iridiyam mishradhatu phauntenapen ki nib banane men kam ati hai.[2]

tika tippani aur sndarbh

  1. hindi vishvakosh, khand 1 |prakashak: nagari pracharini sabha, varanasi |snkalan: bharat diskavari pustakalay |prishth snkhya: 475 |
  2. (as=asmiyam; au=aksijan; klo=klorin; na=naitrojan; ha=haidrojan).

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