Which one of the following allotropes of carbon is isomorphous with crystalline silicon?
Coke
Diamond
Graphite
Coal
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC NDA-1 – 2022
– Crystalline silicon has a diamond cubic crystal structure, where each silicon atom is covalently bonded to four other silicon atoms in a tetrahedral arrangement.
– Diamond, which is also a crystalline allotrope of carbon, also has a diamond cubic structure, with carbon atoms replacing silicon atoms in the same arrangement.
– Coke, Graphite, and Coal are other forms of carbon, but they do not share the same crystal structure as crystalline silicon. Graphite has a layered hexagonal structure, while Coke and Coal are largely amorphous or contain various carbonaceous materials without a single, defined crystal structure.