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Iridium is a transition metal with an atomic number of 77.


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  • Nicole Ellis edited the wiki page Ellis Handouts.   7 minutes ago · View

    An article in The Chemistry Text has been edited. The edited wiki page is Ellis Handouts. Please help out by reading the page and consider adding, editing, or verifying the information.



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The Chemistry Book is a social networking site for chemistry learners and enthusiasts. The site began as a wiki written for high school students located in California. There are over 550 articles, budding glossary, tutoring area, and course calendars.