Which temperature do they need to perform the experiment for perovskite to conduct electric current? A: T=1980°C

B: T>1980°

C: T>_ 1980°C

D:T< 1980°C

For C it's suppose to be an less than equal sign .

Correct answer is D : T <  1980°C

Explanation:

Correct answer is D:T< 1980°C

Perovskite proton conductors belong to the class of high temperature proton conductors (HTPCs) , solid that conduct electricity by transporting H⁺ ions (protons ) at temperatures above ambient , typically 400 - 1000°C

So, we get T < 1980°C

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