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18 December, 05:16

What is the 77 element on the periodtic table

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  1. 18 December, 09:09
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    Iridium

    Explanation:

    A very hard, brittle, silvery-white transition metal of the platinum group, iridium is the second-densest metal (after osmium) with a density of 22.56 g/cm3 as defined by experimental X-ray crystallography.
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