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A polymeric, tetrahdral three dimensiona...

A polymeric, tetrahdral three dimensional network solid (X) on reduction with C gives a all diatomic molecules. This gas netural in nature and is isoelectronic with nitrogen. X is also obtained from a group 14 element after reaction with `O_(2)`. X and Y are

A

`SnO_(2), CO`

B

`SiO_(2), CO`

C

`GeO_(2),CO`

D

`SiO_(2),CO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
X is a network solid and also an oxide of group 14 element, hence X may be `SiO_(2),GeO_(2),SnO_(2),PbO_(2),X` can't be `CO_(2)` since `CO_(2)` is a gas at ordinary temperature. Further X has a tetrahedral geometry, therefore X must be `SiO_(2)` since all other dioxides `GeO_(2),SnO_(2)` and `PbO_(2)` have octahedral geometry. the required reaction is `underset("(X)")(SiO_(2))+3C to SiC+underset("(Y)")(2CO)`
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