Compare Elements

Compare two chemical elements side by side across 19 atomic and physical properties.

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Element comparison
Property Os Osmium Fe Iron
Atomic Number 76 higher 26 higher
Symbol Os different Fe different
Name Osmium different Iron different
Atomic Mass 190.2 higher 55.84 higher
Category Transition Metals same value Transition Metals same value
Period 6 higher 4 higher
Group 8 same value 8 same value
Block d-Block same value d-Block same value
Standard State Solid same value Solid same value
Electronegativity 2.2 higher 1.83 higher
Atomic Radius 216 higher 194 higher
Ionization Energy 8.7 higher 7.902 higher
Electron Affinity 1.1 higher 0.163 higher
Oxidation States +4, +3 different +3, +2 different
Melting Point 3306 K (3032.85 °C) higher 1811 K (1537.85 °C) higher
Boiling Point 5285 K (5011.85 °C) higher 3134 K (2860.85 °C) higher
Density 22.57 higher 7.874 higher
Electron Configuration [Xe]6s2 4f14 5d6 different [Ar]4s2 3d6 different
Year Discovered 1803 different Ancient different

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