Question

Match the following:

Answer 1

1. Silicon does not react with most acids under normal conditions but HF reacts with glass, or it can be said that HF dissolves glass.
$Si{O}_2+HF⟶Si{F}_4+H_{2}O$
$Si{F}_4$ is not a solid like $Si{O}_2$
2. $C{N}^{-}$ is known as a pseudohalide; pseudohalogens are pluatomiv analogues to halogens.
${Cu}^{+2}+2C{N}^2⟶[Cu{\left(CN\right)}_4{]}^{3-}$
3. $2{Cu}^{+2}+4I^{-}⟶2CuI+I_2$
4. $N_2$ is an inert gas due to octet stability.