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  1. Iridium
    Iridium
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    Wikipedia
    https://en.wikipedia.org/wiki/Iridium

    Iridium - Wikipedia

    • Iridium is a chemical element; it has symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, it is considered the second-densest naturally occurring metal (after osmium) with a density of 22.56 g/cm (0.815 lb/cu in) as defined by experimental X-ray crystallography. Ir and Ir are the only two naturally occurring isotop… See more

    AppearanceSilvery white
    Phase at STPsolid
    Melting point2719 K (2446 °C, 4435 °F)
    Boiling point4403 K (4130 °C, 7466 °F)
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    Characteristics

    A member of the platinum group metals, iridium is white, resembling platinum, but with a slight yellowish cast. Because of its hardness, brittleness, and very high melting point, solid iridium is difficult to machine, form, or wo… See more

    Chemistry

    Iridium forms compounds in oxidation states between −3 and +9, but the most common oxidation states are +1, +2, +3, and +4. Well-characterized compounds containing iridium in the +6 oxidation state include IrF6 and the oxi… See more

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  2. Rainbow
    • According to 2 sources
    The name iridium, derived from the Greek word iris (“rainbow”), refers to the various colours of its compounds. Natural iridium consists of a mixture of two stable isotopes, iridium-191 (37.3 percent) and iridium-193 (62.7 percent).

    Iridium | Definition, Properti…

    britannica.com
    At the Royal Institution in London he announced his findings and named one element iridium and the other osmium. The name iridium comes from the Latin word iris, which means rainbow. Though the metal itself isn't rainbow colored, it is called this because of its multi-colored compounds.

    Facts About Iridium - Live S…

    livescience.com
     
  3. People also ask
    Is iridium a metal?
    Iridium is a chemical element; it has symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, it is considered the second-densest naturally occurring metal (after osmium) with a density of 22.56 g/cm 3 (0.815 lb/cu in) as defined by experimental X-ray crystallography.

    Iridium - Wikipedia

    en.wikipedia.org
    What is iridium used for?
    Due to iridium's resistance to corrosion it has industrial applications. The main areas of use are electrodes for producing chlorine and other corrosive products, OLEDs, crucibles, catalysts (e.g. acetic acid), and ignition tips for spark plugs. Resistance to heat and corrosion are the bases for several uses of iridium and its alloys.

    Iridium - Wikipedia

    en.wikipedia.org
    What group is iridium in?
    Iridium belongs to group 9 of the periodic table and resides in period 6. It is part of the d-block elements, a transition metal, and is closely associated with other platinum group metals such as platinum, rhodium, and osmium. Natural iridium consists of two stable isotopes: Ir-191 and Ir-193.

    Iridium Facts - Ir or Atomic Number 77 - Science Notes and Projects

    sciencenotes.org
    What does iridium look like?
    Iridium is a silvery-white shiny metal with a slight yellow cast. The metal exhibits a face-centered cubic crystal structure. Iridium is the most corrosion-resistant metal, resisting attack by acids. However, it is susceptible to reactions with oxidants and sulfur, particularly at higher temperatures.

    Iridium Facts - Ir or Atomic Number 77 - Science Notes and Projects

    sciencenotes.org
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  4. Merriam Webster
    https://www.merriam-webster.com/dictionary/iridium

    Iridium Definition & Meaning - Merriam-Webster

     
  5. Britannica
    https://www.britannica.com/science/irid…

    Iridium | Definition, Properties, & Uses | Britannica

    WEBSep 28, 2024 · Iridium is a rare, dense, and hard metal that belongs to the platinum group of elements. It is used in platinum alloys, jewelry, and the international prototype kilogram standard.

  6. Science Notes and Projects
    https://sciencenotes.org/iridium-facts-ir-or-atomic-number-77

    Iridium Facts – Ir or Atomic Number 77 - Science Notes and Projects

  7. Cambridge Dictionary
    https://dictionary.cambridge.org/dictionary/english/iridium

    IRIDIUM | English meaning - Cambridge Dictionary

  8. Dictionary
    https://www.dictionary.com/browse/iridium

    IRIDIUM Definition & Meaning | Dictionary.com

  9. Cambridge Dictionary
    https://dictionary.cambridge.org/us/dictionary/english/iridium

    IRIDIUM | definition in the Cambridge English Dictionary

  10. chemistrycool.com
    https://chemistrycool.com/element/iridium

    Comprehensive Guide to Iridium: Properties, Uses, and Applications

  11. The Royal Society of Chemistry
    https://www.rsc.org/periodic-table/element/77

    Iridium - Element information, properties and uses | Periodic Table

  12. Oxford Learner's Dictionaries
    https://www.oxfordlearnersdictionaries.com/definition/english/iridium

    iridium noun - Definition, pictures, pronunciation and usage notes ...

  13. Periodic Table
    https://periodic-table.com/iridium

    Iridium | History, Uses, Facts, Physical & Chemical Characteristics

  14. IFLScience
    https://www.iflscience.com/what-is-iridium-and-is...

    What Is Iridium And Is It More Expensive Than Gold?

  15. Your Dictionary
    https://www.yourdictionary.com/iridium

    Iridium Definition & Meaning - YourDictionary

  16. ThoughtCo
    https://www.thoughtco.com/iridium-facts-606547

    Iridium Facts - Periodic Table of the Elements - ThoughtCo

  17. New World Encyclopedia
    https://www.newworldencyclopedia.org/entry/Iridium

    Iridium - New World Encyclopedia

  18. Live Science
    https://www.livescience.com/39143-iridium.html

    Facts About Iridium - Live Science

  19. Chemicool
    https://www.chemicool.com/elements/iridium.html

    Iridium Element Facts - chemicool.com

  20. ThoughtCo
    https://www.thoughtco.com/metal-profile-iridium-2340138

    Metal Profile: Iridium - ThoughtCo

  21. Examples
    https://www.examples.com/chemistry/iridium.html

    Iridium (Ir) - Definition, Preparation, Properties, Uses ... - Examples

  22. Facts.net
    https://facts.net/science/chemistry/50-facts-about-iridium

    50 Facts About Iridium

  23. WebElements
    https://www.webelements.com/iridium

    WebElements Periodic Table » Iridium » the essentials

  24. Oxford Learner's Dictionaries
    https://www.oxfordlearnersdictionaries.com/.../iridium

    iridium noun - Definition, pictures, pronunciation and usage notes ...

  25. Investopedia
    https://www.investopedia.com/terms/i/iridium.asp

    Iridium: What it Is, Applications, Example - Investopedia

  26. ACS Publications
    https://pubs.acs.org/doi/10.1021/jacs.4c08149

    Monitoring the Structural Changes in Iridium Nanoparticles during ...