Question

Does Silicon form a cation or is it anion?

Answer 1

@UnkleRhaukus @coolandsmartrr @Callisto

Answer 2

it can do either

Answer 3

when it is attached to more electronegative atom then its electronegative then it will be slightly negative mean anion when it is attached to less electronegative atom compared to its electronegative then it will be little positive that is cationic in nature

Answer 4

Silicon generally forms at least polar covalent bonds, like carbon, as befits its status as a Gropu 4A nonmetal. The only obvious exception I can think of is SiC, which despite the similarity you might expect to graphite or diamond does, I think, have significant ionic or metallic character to its bonding in the solid state.