Bidhov BizarCLASS XIIKendriya Vidyalaya No 2KasaragodKeralaDear sir When i surfed the internet for the proof of the above topic i cud get a derivation which is a bit awkward the same derivation was given in pradeep too...plz go to the link provided..http://www.tutorvista.com/content/chemistry/chemistry-iv/solid-state/tetrahedral-void.phpaccording to this proof the have taken another sphere other than the 4 spheres ie the 5th sphere and proved this..but if there are 5 spheres then the shape wont be tetrahedral..so i came up with another technique to find the answer using centre of mass..but i get the same answer so the answer is right but how cud they use this proof or the 5th sphere please explain to me..my email id isbidhovbizar@gmail.com plz respond..

Bidhov Bizar , 13 Years ago

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