To prevent magnesium from oxidation in electrolytic extraction process

1.	To prevent magnesium from oxidation in electrolytic extraction process
A.	Some calcium fluoride is added
B.	Some chlorides are added
C.	Metal is taken out by spoons
D.	The whole process is done in an atmosphere of coal gas
Answer» E.

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To prevent magnesium from oxidation in electrolytic extraction process

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