Question

What is the name of $SiC$?
(A) Silicon Carbon
(B) Quartz
(C) Carborundum
(D) Silicon carboxylate

Answer 1

Hint: Carbon and silicon both belong to the same block and same group. They belong to $p$-block and IV A group. As we are moving from top to bottom in a group the electronegativity of the atoms decreases. The difference of electronegativity will allow the formation of the compound.

Complete step by step answer:

• We know that $SiC$ is called a silicon carbide. Means in$SiC$, silicon is positively charged and carbon is negatively charged.
• As moving from top to bottom in a group the electronegativity of the atoms decreases. So, the carbon is having a little bit more electronegativity than the silicon.
• So, the carbon will take the electrons from silicon and form$SiC$.
• Now coming to options, in option A, it is mentioned that silicon carbon, it is wrong.
• In Option B, Quartz. Quartz means silicon dioxide ($Si{{O}_{2}}$), then option B is wrong.
• In option D, Silicon carboxylate. In $SiC$, there is no carboxyl group. So option D is wrong.
• Coming to option C, Carborundum. The other name of $SiC$is carborundum.
• Silicon carbide ($SiC$) is covalent solid which is a subtype of crystalline solid.
• It is covalent solid since the atoms of silicon are connected with carbon through covalent bonds tetrahedrally.
  So, the correct option is C.

Note: Don’t be confused with the words, Silicon Carbon and Silicon carbide. There is no chemical that exists with the name of silicon carbon. Silicon carbide has the formula $SiC$.