Why bx3 is most acidic among 13 gropu halides?
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Trihalides, MX3
As shown in all the combinations of Group 13 element (M) and halogen (X) exist for the trihalides (MX3), except thallium(III) iodide. It should be noted that while there is a compound with the general formula TlI3, it is actually a thallium(I) compound of I3-.
Selected physical properties of the Group 13 trihalides, MX3.ElementMp (°C)Bp (°C)BF3-126.8-100.3BCl3-107.312.6BBr3-46.391.3BI349.9210AlF31291-AlCl3192.4 (anhydrous), 0.0 (hexahydrate)120 (hexahydrate)AlBr397.8265AlI3189.4 (anhydrous) 185 dec. (hexahydrate)300 subl.GaF38001000GaCl377.9201GaBr3121.5278.8GaI3212345InF31172-InCl3586800InBr3220-InI3210 subl.-TlF3300 dec.-TlCl340 dec.-TlBr340 dec.-
As shown in all the combinations of Group 13 element (M) and halogen (X) exist for the trihalides (MX3), except thallium(III) iodide. It should be noted that while there is a compound with the general formula TlI3, it is actually a thallium(I) compound of I3-.
Selected physical properties of the Group 13 trihalides, MX3.ElementMp (°C)Bp (°C)BF3-126.8-100.3BCl3-107.312.6BBr3-46.391.3BI349.9210AlF31291-AlCl3192.4 (anhydrous), 0.0 (hexahydrate)120 (hexahydrate)AlBr397.8265AlI3189.4 (anhydrous) 185 dec. (hexahydrate)300 subl.GaF38001000GaCl377.9201GaBr3121.5278.8GaI3212345InF31172-InCl3586800InBr3220-InI3210 subl.-TlF3300 dec.-TlCl340 dec.-TlBr340 dec.-
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