P-Block Elements Ques 508

Question: $ ( Si_2O_5 )_{n}^{2n-} $ anion is obtained when:

Options:

A) no oxygen of a $ SiO_4^{4-} $ ’tetrahedron is shared with another $ SiO_4^{4-} $ tetrahedron

B) one oxygen of a $ SiO_4^{4-} $ tetrahedron is shared with another $ SiO_4^{4-} $ tetrahedron

C) two oxygen of a $ SiO_4^{4-} $ tetrahedron are shared with another $ SiO_4^{4-} $ tetrahedron

D) three oxygen of a $ SiO_4^{4-} $ tetrahedron are shared with another $ SiO_4^{4-} $ tetrahedron

Show Answer

Answer:

Correct Answer: D

Solution:

Total No. oxygen atoms per silicon atom $ =\frac{1}{2}+\frac{1}{2}+\frac{1}{2}+1=2.5 $
$ \therefore $ Formula $ Si_2O_5^{2-}. $



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