Question

Why fe3o4is black i n colour

Answer 1

Answer:

They are silverish in color.

The magnets that we see in households are low strength, ferric oxide (Fe3O4)

generally it is black in color because the oxide of the ferrous is black

Explanation:

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Answer 2

${Fe}_{3}{O}_{4}$ is black in colour because iron oxides are widely used for many purposes like in paints , coatings abd coloured concerts etc . So , colours commonly available are yellow, red, black etc .

Iron is inexpensive and durable pigment .