क्रोमियम
- REDIRECTsaancha:Infobox element
kromiyam (aangrezi:Chromium) ek rasayanik tatv hai. kromiyam ki khoj luees nikolas vaikvelin (Louis Nicolas Vauquelin) ne ki thi. kromiyam ka mukhy khanij kromait, FeCr2O4, hai aur isi se kromiyam prapt hota hai. any adhik durlabh khanij krokoait, melaankro ait krom-okar ityadi hai. yah bahumooly pattharoan (jo isake karan rangin hote haian), ulka piandoan tatha jivoan ki rakh mean bhi nimn matra mean milata hai.
prapti
dhatu prapt karane ki vidhiyoan mean kromiyam ke aauksaid ka upayog hota hai. 1,5000 seantigred par aauksaid garam kar, shuddh kiya hua, sookhi haidrojan gais, pravahit karane se avakaran hota hai. ailuminiyam dhatu ke choorn ke upayog se dhatu prapt karane ki goldashmit ki thamaeet vidhi ati uttam hai. kromik aauksaid aur ailuminiyam choorn ka mishran beriyam par aauksaid tatha ailuminiyam athava maignishiyam ke phyooj se prajvalit karane par tapakshepi kriya hoti hai, jisamean kromiyam dhatu pighali huee avastha mean prapt hoti hai.
vyavasayik matra mean kromiyam isi tharmait vidhi dvara athava, vidyut bhatthi mean silikan dvara, aauksaid ke avakaran se prapt hota hai. kromiyam ke lavan ke vidyut vishleshan se prapt amalagam ko garam karane par shuddh kromiyam milata hai. kromiyam tatha lohe ki ek upayogi mishradhatu pherokrom sidhe krom ayaranaston ko karban ke sath vidyut bhatthi mean garam kar banaee jati hai, jo adhikatar krom ispat banane mean prayukt hoti hai.
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tika tippani aur sandarbh
sanbandhit lekh
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| H | He | ||||||||||||||||||||||||||||||||||||||||
| Li | Be | B | C | N | O | F | Ne | ||||||||||||||||||||||||||||||||||
| Na | Mg | Al | Si | P | S | Cl | Ar | ||||||||||||||||||||||||||||||||||
| K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr | ||||||||||||||||||||||||
| Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe | ||||||||||||||||||||||||
| Cs | Ba | La | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn | ||||||||||
| Fr | Ra | Ac | Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Uut | Uuq | Uup | Lv | Uus | Uuo | ||||||||||
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