Question

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The percentage by weight of chormium in green coloured Chromium Oxide is 68.43 and it is isomorphous with ferric oxide. Calculate the correct atomic weight of chromium.
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Answer 1

Answer:

Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard and brittle transition metal.[4] Chromium is the main additive in stainless steel, to which it adds anti-corrosive properties. Chromium is also highly valued as a metal that is able to be highly polished while resisting tarnishing. Polished chromium reflects almost 70% of the visible spectrum, with almost 90% of infrared light being reflected.[5] The name of the element is derived from the Greek word χρῶμα, chrōma, meaning color,[6] because many chromium compounds are intensely colored.

Answer 2

Answer:

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Chromium(III) oxide (or chromia) is an inorganic compound with the formula Cr

2O

3. It is one of the principal oxides of chromium and is used as a pigment. In nature, it occurs as the rare mineral eskolaite.