अक्रिय गैस

akriy gais (aangrezi:Inert Gases) hiliyam (He), niaaun (Ne), argan (Ar), kriptan (Kr), jenan (Xe) tatha red aaun (Rn) avart sarani ke shoony varg ke tatv haian. shoony varg ke tattv rasayanik drishti se nishkiy hote haian. is karan in tatvoan ko akriy gais ya 'utkrisht gais' kaha jata haian. red aaun ko chho dakar any sabhi gaisean vayumandal mean payi jati haian.

• akriy gais ki khoj ka shrey 'lokeyar', 'raimaje', 'raile' adi ko jata hai. akriy gaisoan ki prapti durlabh hone ke karan unhean 'durlabh gais' bhi kaha jata hai.
• akriy gais un gaisoan ko kahate haian, jo sadharanat: rasayanik abhikriyaoan mean bhag nahian letian aur sada mukt avastha mean prapy haian.
• in gaisoan mean hiliyam, niaaun, argan, jin aaun aur rad aaun sammilit haian. ye utkrisht gaisoan ke nam se bhi prasiddh haian.
• samast akriy gaisean rangahin, gandhahin tatha svadahin hoti haian.
• sthir dab aur sthir ayatan par pratyek gais ki vishisht ushmaoan ka anupat 1.67 ke barabar hota hai, jisase pata chalata hai ki ye sab ek paramanuk gaisean haian.

upayog

1. hiliyam- yah gubbaroan aur vayupotoan mean bharane ke kam mean ati hai. gahare samudr mean gota lagane vale saans lene ke lie vayu ke sthan par hiliyam aur aauksijan ka mishran kam mean late haian. dhatu karm mean jahaan akriy vayumandal ki avashyakata hoti hai, hiliyam ka prayog kiya jata hai. vayu se yah bahut halki hoti hai, at: b de-b de havaee jahajoan ke tayaroan mean isi gais ko bhara jata hai.
2. niaaun - bahut kam dab par niaaun se bhari tyooboan mean se vidyut gujarane par narangi rang ki chamak paida hoti hai, jisaka vidyut sanketoan mean upayog kiya jata hai.
3. argan- 26 pratishat naitrojan ke sath milakar argan vidyut ke balboan mean tatha rediyo valboan aur tyooboan mean prayukt hoti hai.
4. kriptan aur jin aaun inaka prayog kisi kam mean nahian hota.
5. redan- yah ghatak pho doan aur thik n hone vale ghavoan ke ilaj mean kam ati hai.

panne ki pragati avastha

adhar

prarambhik

madhyamik

poornata

shodh