Which one of the following allotropes of carbon is isomorphous with crystalline silicon?
[amp_mcq option1=”Coke” option2=”Diamond” option3=”Graphite” option4=”Coal” correct=”option2″]
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.