Compare Elements

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

Swap
Element comparison
Property Ra Radium Hs Hassium
Atomic Number 88 lower 108 lower
Symbol Ra different Hs different
Name Radium different Hassium different
Atomic Mass 226.0254 lower 269.1336 lower
Category Alkaline Earth Metals different Transition Metals different
Period 7 same value 7 same value
Group 2 lower 8 lower
Block s-Block different d-Block different
Standard State Solid same value Solid same value
Electronegativity 0.9 no data — no data
Atomic Radius 283 no data — no data
Ionization Energy 5.279 no data — no data
Electron Affinity — no data — no data
Oxidation States +2 different 8, 6, 5, 4, 3, 2 different
Melting Point 973 K (699.85 °C) no data — no data
Boiling Point 1413 K (1139.85 °C) no data — no data
Density 5 no data — no data
Electron Configuration [Rn]7s2 different [Rn]7s2 5f14 6d6 different
Year Discovered 1898 different 1984 different

higher lower