Among Si₃N₄, α-BN, AlN and (SN)_x, the compound with the highest conductivity is

Question

Question

This question was previously asked in

CSIR-UGC (NET) Chemical Science: Held on (18 Sept 2022)

Answer 1

Explanation:-

(SN)_x is the chemical formula for a polymer of sulfur nitride, and it is commonly referred to as "polymeric nitrogen" or "sulfur nitride polymer." This compound has been hypothesized to exist under high-pressure conditions, and it is believed to have intriguing electronic properties.
Experimental studies and theoretical calculations have suggested that (SN)x may exhibit metallic or semi-metallic behavior, indicating the possibility of high electrical conductivity.
However, it's important to note that (SN)_x is a relatively theoretical material, and its properties and behavior are not yet fully understood due to its challenging synthesis and stability under ambient conditions.
In contrast, Si₃N₄ (silicon nitride), α-BN (hexagonal boron nitride), and AlN (aluminum nitride) are generally insulating materials and are not expected to exhibit high electrical conductivity under normal conditions.

Conclusion:-

Hence, among the compounds Si₃N₄, α-BN, AlN, and (SN)_x, the compound with the highest conductivity is likely to be (SN)_x.