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Specialty Chemistry Forums => Other Sciences Question Forum => Topic started by: yalda on May 06, 2020, 03:29:54 PM

Title: Allotrophy
Post by: yalda on May 06, 2020, 03:29:54 PM

So what is the exact diffrence between allotrpe and isomer??
I read that allotrophy is beyween same elements but SiO2 have 2 allotrpes 

Title: Re: Allotrophy
Post by: mjc123 on May 07, 2020, 11:05:58 AM

Allotropy (no h) refers to different forms of the same element, e.g. graphite and diamond.
Polymorphism refers to different crystal structures of the same compound, e.g. SiO₂.
Isomerism refers to different molecular structures of compounds with the same molecular formula, e.g. n-butane and 2-methylpropane (both C₄H₁₀).