सेलेनियम

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is lekh ka punarikshan evan sampadan hona avashyak hai. ap isamean sahayata kar sakate haian. "sujhav"

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1. REDIRECTsaancha:Infobox element

seleniyam (aangrezi:Selenium) avart sarani ka ek tatv hai. seleniyam ka pratik Se, paramanu kramaank 34, paramanu bhar 78.96, galanaank 221° sean., kvathanaank 685° sean. hota hai. seleniyam ke 6 sthayi samasthanik aur 2 rediyo aiktiv samasthanik jnat haian. seleniyam ka ilektr aaunik vinyas 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁴ hota hai.

khoj evan prapti

seleniyam ka avishkar barajiliyas ne 1817 ee. mean kiya tha. bhoomandal par vyapak roop se yah paya jata hai par b di hi alp matra mean. yah svatantr nahian milata. samanyat: gandhak, visheshat: japani gandhak ke sath yah asanyukt avastha mean aur anek khanijoan mean bhari dhatuoan ke selenaid ke roop mean paya jata hai. sele niyam mukt khanijoan se seloniyam upotpad ke roop mean prapt hota hai.

panne ki pragati avastha

adhar

prarambhik

madhyamik

poornata

shodh