Compare Elements

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

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Element comparison
Property Ru Ruthenium Zr Zirconium
Atomic Number 44 higher 40 higher
Symbol Ru different Zr different
Name Ruthenium different Zirconium different
Atomic Mass 101.1 higher 91.22 higher
Category Transition Metals same value Transition Metals same value
Period 5 same value 5 same value
Group 8 higher 4 higher
Block d-Block same value d-Block same value
Standard State Solid same value Solid same value
Electronegativity 2.2 higher 1.33 higher
Atomic Radius 207 higher 186 higher
Ionization Energy 7.361 higher 6.634 higher
Electron Affinity 1.05 higher 0.426 higher
Oxidation States +3 different +4 different
Melting Point 2607 K (2333.85 °C) higher 2128 K (1854.85 °C) higher
Boiling Point 4423 K (4149.85 °C) lower 4682 K (4408.85 °C) lower
Density 12.1 higher 6.52 higher
Electron Configuration [Kr]5s1 4d7 different [Kr]5s2 4d2 different
Year Discovered 1827 different 1789 different

higher lower