$C O_{2}$ and $S i O_{2}$ is a solid or gas ?

C O_{2}

gas and

S i O_{2}

solid

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C O_{2}

solid and

S i O_{2}

gas

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C O_{2}

gas and

S i O_{2}

gas

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C O_{2}

solid and

S i O_{2}

solid

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $C O_{2}$ gas and $S i O_{2}$ solid
If you look at the crystal structure of silicon dioxide, you will see it is comprised of tetrahedra (one silicon surrounded by 4 oxygen atoms) and these tetrahedra are in turn connected to each other, and subsequently form a 2-dimensional network which is large enough to make this substance a solid. The intermolecular forces within $C O_{2}$ are very weak, only comprised of London dispersion forces, thereby allowing for $C O_{2}$ to exist as a gas rather than a liquid or solid under standard conditions. $S i O_{2}$ on the other hand, has more of a metallic character since, silicon is a metalloid. The greater the ionic/metallic character of the substance, the greater the intermolecular forces will be. In addition to this, $S i O_{2}$ has a highly crystalline shape, allowing for maximum interaction between the atoms to allow for a rigid and unwavering shape, thereby allowing $S i O_{2}$ to form rigid bonds in a crystalline form.

Suggest Corrections