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77 Ir Iridium (plaintext) |
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H He |
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Li Be B C N O F Ne |
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Na Mg Al Si P S Cl Ar |
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K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr |
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Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe |
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Cs Ba La Hf Ta W Re Os[Ir]Pt Au Hg Tl Pb Bi Po At Rn |
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Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og |
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Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu |
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Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr |
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| 77 ___ | |
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| Iridium | |
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| 192.22 u | |
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Wiki Article: Iridium |
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Electron Configuration: [Xe]6s2 4f14 5d7 |
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Electronegativity: 2.2 |
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Atomic Radius: 202 pm |
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Ionization Energy: 9.1 eV |
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Electron Affinity: 1.565 eV |
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Oxidation States: +4, +3 |
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Standard State: Solid |
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Melting Point: 2719 K |
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Boiling Point: 4701 K |
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Density: 22.42 g/cm3 |
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Family: Transition metal |
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Year Discovered: 1803 |
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Number of Neutrons: 115 |
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Number of Protons: 77 |
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Number of Electrons: 77 |
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Number of Valence: |
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Valency: |
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Group: 9 |
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Period: 6 |
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Shell: d-shell |
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Specific Heat: 0.131 J/g K |
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Radioactive: 0 |
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Occurrence: Natural |
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Source: Merging neutron stars |
