`CO_`2 is a gas but `SiO_2` is a solid. Give reason.

Carbon and Silicon are present in the same group. Their dioxides CO_2 and SiO_2 , show some similarities. For example both are acidic oxides. a. But, CO_2 is a gas while SiO_2 is a solid. Account. b. The basic building blocks of silicates are (SiO4)^4-tetrahedra. Differentiate Orthosilicates and Pyrosilicates. c. Silica gel is used as-a drying agent. Justify.

Carbon and silicon are present in the same group. Their dioxides CO_2 and SiO_3 show some similarities. For example both are acidic oxides. But CO_2 is a gas, SIO_2 is a solid. Account.

Give reasons for the following: CO_2 is a gas whereas SiO_2 is a solid.

CCl_2 cannot be hydrolysed. Give reason

At room temperature, H_2O is liquid while H_2S is a gas. The reason is

Why is dioxygen a gas, but sulphur a solid?