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Iron Fe Atomic Number: 26 Atomic Weight: 55.845 Melting Point: 1808.15 KBoiling Point: 3134 KSpecific mass: 7.874 g/cm3 Electronegativity: 1.83
Ruthenium Ru Atomic Number: 44 Atomic Weight: 101.07 Melting Point: 2523.15 K Boiling Point: 4423 KSpecific mass: 12.37 g/cm3 Electronegativity: 2.2
Osmium Os Atomic Number: 76 Atomic Weight: 190.23 Melting Point: 3300.15 K Boiling Point: 5285 KSpecific mass: 22.61 g/cm3 Electronegativity: 2.2
Hassium Hs Atomic Number: 108 Atomic Weight: [269] Melting Point: ? K Boiling Point: ? KSpecific mass: ? 41 g/cm3 Electronegativity: ?