`CO_(2)` exists in the gaseous state, whereas `SiO_(2)` is a hard solid though both carbon and silicon belong to the same group. Give reasons.

`CO_(2)` exists in the gaseous state, whereas `SiO_(2)` is a hard soli

1.	`CO_(2)` exists in the gaseous state, whereas `SiO_(2)` is a hard solid though both carbon and silicon belong to the same group. Give reasons.
Answer» (i) comparison of size of carbon and silicon (ii) effect of size of carbon and silicon on the nature of bond present in `CO_(2)` and `SiO_(2)` (iii) influence of nature of bonds on the structure of the molecules (iv) relation between the structure of the substance and physical state of matter

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`CO_(2)` exists in the gaseous state, whereas `SiO_(2)` is a hard solid though both carbon and silicon belong to the same group. Give reasons.

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