Answer : Silicon dioxide, \(SiO_2\), is a covalent compound.
Explanation :
Covalent compound : It is a compound in which the bonds are formed by the equal sharing of electrons. The bonds are formed between two non-metals.
Ionic compound : It is a compound in which the bonds are formed by the complete transfer of electrons.
In the silicon dioxide \((SiO_2)\), the silicon and the oxygen atom is a non-metals and the bonds are formed between silicon and oxygen non-metal atoms are the covalent bonds.
Hence, the silicon dioxide, \(SiO_2\), is a covalent compound.