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Home  >>  AIMS  >>  Class12  >>  Chemistry  >>  Solid State
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Diamond is hard because

$\begin{array}{1 1}(A)\;\text{All the four valence electrons are bonded to each carbon atom by covalent bonds}\\(B)\;\text{It is a giant molecule}\\(C)\;\text{It is made up of carbon atoms}\\(D)\;\text{It cannot be burnt}\end{array} $

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Diamond is hard because all the four valence electrons are bonded to each carbon atom by covalent bonds
Hence (A) is the correct anwer.
answered May 28, 2014 by sreemathi.v
 

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