Compare Elements

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

Swap
Element comparison
Property Db Dubnium Ra Radium
Atomic Number 105 higher 88 higher
Symbol Db different Ra different
Name Dubnium different Radium different
Atomic Mass 268.126 higher 226.0254 higher
Category Transition Metals different Alkaline Earth Metals different
Period 7 same value 7 same value
Group 5 higher 2 higher
Block d-Block different s-Block different
Standard State Solid same value Solid same value
Electronegativity — no data 0.9 no data
Atomic Radius — no data 283 no data
Ionization Energy — no data 5.279 no data
Electron Affinity — no data — no data
Oxidation States 5, 4, 3 different +2 different
Melting Point — no data 973 K (699.85 °C) no data
Boiling Point — no data 1413 K (1139.85 °C) no data
Density — no data 5 no data
Electron Configuration [Rn]7s2 5f14 6d3 different [Rn]7s2 different
Year Discovered 1967 different 1898 different

higher lower