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Silicon is the second most abundant elem...

Silicon is the second most abundant element `(~27.2%)` in the earth's after oxygen `(45.5 %)` Carbon. Silicon, germanium, tin and lead constitute the group `14` of the periodic table. Chemistry of silicon is distinctly different from that of carbon.
For example, under standard conditions `CO_(2)` is a gas whereas `SiO_(2)` is a covalent solid.
Draw the structures of `CO_(2)` and `SiO_(2)`

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