number of oxidation Cr proper name
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Well oxidation number of chromium can be
+2 , +3 , +6
+2 , +3 , +6
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Explanation:
the regions of the surface and atmosphere of the earth or another planet occupied by living organisms.
2.
an artificial structure enclosing a self-contained ecosystem or ecosystems.
"the elliptical domed biosphere is the largest single-span glasshouse in the world"
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