1.

What is the atomic number of iron and chromium in chromite ore?

Answer»

`+3,+2`
`+3,+6`
`+2,+6`
`+2,+3`

SOLUTION :ORE of CHROMITE `FeOCr_(2)O_(3)`
Oxidation number of Iron= +2
Oxidation number of chromium = +3


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