The chemical formula of magnetic oxide is ______?

مقناطیسی آکسائڈ کا کیمیائی فارمولا ______ ہے؟

He3O2

He2O3

Fe3O4

Fe2O3

Fe3O4 occurs as a mineral with a chemical name Iron (II, III) oxide.

It is also known as Magnetite or Magnetic oxide.

Table 1.5 from Introduction to Magnetic Oxides | Semantic Scholar

Magnetic susceptibilities for several iron oxides and soil... | Download Table