Question

give reason..
mettalic oxides of zone ,magnesium and stored under oil​

Answer 1

Single crystals of congruently and incongruently melting oxides have been grown by the optical floating zone (OFZ) and traveling solvent floating zone techniques ...

Answer 2

${\blue{\huge{\text{Answer}}}}$

They are highly reactive metal. They reacts with oxygen in air at room temperature, the reaction is highly exothermic. To prevent this sodium is kept preserved under kerosene. They do not react with kerosene.