Chromium

Transcript

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Special offer!!! 50%off

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Chromium

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Judy Xia

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Announcement: Chromium, not Chrome

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Element Chromium

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Google Chrome

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Who am I？

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Chemical Symbol: Cr Atomic Number: 24 Mass Number: 51.9961u Stable Isotopes: 50Cr, 52Cr, 53Cr, and 54Cr with natural abundances of 4.35%, 83.79%, 9.50%, and 2.36% Molar Mass: 51.9961u

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Where, and in what form, is it found on Earth?

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found in chromite ore as ore

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many places including South Africa, India, Kazakhstan and Turkey

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I am here!

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first discovered

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Louis-Nicholas Vauquelin

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in 1797

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State

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a lustrous, brittle, hard metal usually in solid

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use

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to harden steel to manufacture stainless steel to produce several alloys

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