Compare Elements

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

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Element comparison
Property Og Oganesson Kr Krypton
Atomic Number 118 higher 36 higher
Symbol Og different Kr different
Name Oganesson different Krypton different
Atomic Mass 295.216 higher 83.8 higher
Category Noble Gases same value Noble Gases same value
Period 7 higher 4 higher
Group 18 same value 18 same value
Block p-Block same value p-Block same value
Standard State Expected to be a gas different Gas different
Electronegativity — no data 3 no data
Atomic Radius — no data 202 no data
Ionization Energy — no data 14 no data
Electron Affinity — no data — no data
Oxidation States +6, +4, +2, +1, 0, -1 different 0 different
Melting Point — no data 115.79 K (-157.36 °C) no data
Boiling Point — no data 119.93 K (-153.22 °C) no data
Density — no data 0.0037 no data
Electron Configuration [Rn]7s2 7p6 5f14 6d10 (predicted) different [Ar]4s2 3d10 4p6 different
Year Discovered 2006 different 1898 different

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