A) they are coated with gold.
B) compounds are formed with transition metals.
C) they are oxidized.
D) None of the above
Correct Answer: B
Solution :
Option [b] is correct. Explanation: When rare-Earth elements form compounds with transition metals such as iron, nickel, cobalt, etc. Curie temperatures thus rise well above room temperature.
You need to login to perform this action.
You will be redirected in
3 sec
