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Which of the following statements is not correct?

$\begin{array}{1 1}\text{Silicon is the second member of group 14}\\\text{Silicon tetrahalide exhibits the phenomenon of hydrolysis}\\\text{Because of large radius of silicon atom,the latter does not form the bonds of the type Si=Si,Si=Si}\\\text{Silicon dioxide molecules in solid phase are held together by vander waals forces}\end{array} $

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Answer : Silicon dioxide molecules in solid phase are held together by vander waals forces
Each silicon atom in $SiO_2$ is bounded to four oxygen atoms tetrahedrally .Each oxygen atom is shared by two silicon atoms.
answered Jul 24, 2014 by sreemathi.v
 
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