▁in ▁the ▁A que ous ▁arg on ▁section . ▁ ▁Arg on ▁dif lu or ide ▁Arg on ▁dif lu or ide , ▁Ar F 2 , ▁is ▁predicted ▁to ▁be ▁stable ▁at ▁press ures ▁over ▁ 5 7   G Pa . ▁It ▁should ▁be ▁an ▁elect rical ▁ins ulator . ▁ ▁Ne 2 Ar ▁and ▁Ar 2 Ne ▁At ▁around ▁ 4   K ▁there ▁are ▁two ▁phases ▁where ▁ne on ▁and ▁arg on ▁are ▁mixed ▁as ▁a ▁solid : ▁Ne 2 Ar ▁and ▁Ar 2 Ne . ▁With ▁Kr , ▁solid ▁arg on ▁forms ▁a ▁dis organ ized ▁mixture . ▁ ▁Ar H 4 ▁Under ▁high ▁pressure ▁sto ichi ometric ▁sol ids ▁are ▁formed ▁with ▁hydro gen ▁and ▁o xygen : ▁Ar ( H 2 ) 2 ▁and ▁Ar ( O 2 ) 3 . ▁ ▁Ar ( H 2 ) 2 ▁cry st all ises ▁in ▁the ▁hex ag onal ▁C 1 4 ▁M g Z n 2 ▁L aves ▁phase . ▁It ▁is ▁stable ▁to ▁at ▁least ▁ 2 0 0   G Pa , ▁but ▁is ▁predicted ▁to ▁change ▁at ▁ 2 5 0   G Pa ▁to ▁an ▁Al B 2 ▁structure . ▁At ▁even ▁higher ▁press ures ▁the ▁hydro gen ▁mole cules ▁should ▁break ▁up ▁followed ▁by ▁met all ization . ▁ ▁Ar O ▁and ▁Ar O 6 ▁O xygen ▁and ▁arg on ▁under ▁pressure ▁at ▁room ▁temperature ▁form ▁several ▁different ▁allo ys ▁with ▁different ▁cry stal ▁structures . ▁Arg on ▁atoms ▁and ▁o xygen