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Date: 5-1-2018
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Date: 6-11-2018
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Date: 6-1-2019
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Platinum is part of the the Platinum Group Metals (PGM) whic is located in the 5th and 6th rows of the transition metal section of the periodic table and includes Ruthenium, Rhodium, Palladium, Osmium, Iridium, and Platinum. Common characteristics include resistance to wear, oxidation, and corrosion, high melting points, and oxidation states of +2 to +4. They are generally non-toxic.
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دخلت غرفة فنسيت ماذا تريد من داخلها.. خبير يفسر الحالة
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العتبة العباسية المقدسة توجه دعوة لجامعة كركوك للمشاركة في حفل التخرج المركزي
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