Compare Elements

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

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Element comparison
Property Kr Krypton Ne Neon
Atomic Number 36 higher 10 higher
Symbol Kr different Ne different
Name Krypton different Neon different
Atomic Mass 83.8 higher 20.18 higher
Category Noble Gases same value Noble Gases same value
Period 4 higher 2 higher
Group 18 same value 18 same value
Block p-Block same value p-Block same value
Standard State Gas same value Gas same value
Electronegativity 3 no data — no data
Atomic Radius 202 higher 154 higher
Ionization Energy 14 lower 21.565 lower
Electron Affinity — no data — no data
Oxidation States 0 same value 0 same value
Melting Point 115.79 K (-157.36 °C) higher 24.56 K (-248.59 °C) higher
Boiling Point 119.93 K (-153.22 °C) higher 27.07 K (-246.08 °C) higher
Density 0.0037 higher 0.0009 higher
Electron Configuration [Ar]4s2 3d10 4p6 different [He]2s2 2p6 different
Year Discovered 1898 same value 1898 same value

higher lower