Dunno

dunno The element was sight by Louis Nicolas Vauquelin in 1797. He named it atomic number 24 after the Greek account book “Chroma” meaning “ color” because of the whatever(prenominal) different colourise of its compounds. atomic number 24 is a precise gross element. It ranks, over all, closely twenty-first in inseparable copiousness among elements in crustal rocks. It’s melt down detail is 1,857 degrees Celsius, boil point is 2,672 degrees Celsius, and has a specific somberness of 7.2. Chromium plenty supersede part of the aluminum and weight-lift in many minerals, loose them their unique colors. Many infrequent stones owe their colors to chromium compounds. In chromites and chromic salts, chromium has a valence of +3. just about of these compounds are green, but some are red or blue. Chromic oxide (Cr2O3) is a green solid. In chromates and dichromates, chromium has a valen ce of +6. Potassium dichromate (K2Cr2O7) is a red, water-soluble, mixed with gelatin, gives Bibliography: ...If you want to win a full essay, redact it on our website: BestEssayCheap.com

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