Question

Silicon carbide is another network solid with an extensively interlocked structure. Silicon and carbon capable of sharing electrons in the same manner as carbon does with itself in diamond because: Silicon is the same size of atom as carbon.
Silicon is in the same period with carbon.
Silicon is in the same group and also has 4 valence electrons.
Silicon has the same number of electron shells as carbon.

Answer 1

Silicon is the same size of atom as carbon
- Wrong statement as Silicon is larger than carbon

Silicon is in the same period with carbon.
- Definitely wrong, silicon in period 3, carbon in period 2

Silicon has the same number of electron shells as carbon.
- Wrong, silicon has one extra valence shell.

Which leaves...

Answer 2

C