Compare Elements

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

Swap
Element comparison
Property K Potassium Ga Gallium
Atomic Number 19 lower 31 lower
Symbol K different Ga different
Name Potassium different Gallium different
Atomic Mass 39.0983 lower 69.723 lower
Category Alkali Metals different Post-transition Metals different
Period 4 same value 4 same value
Group 1 lower 13 lower
Block s-Block different p-Block different
Standard State Solid same value Solid same value
Electronegativity 0.82 lower 1.81 lower
Atomic Radius 275 higher 187 higher
Ionization Energy 4.341 lower 5.999 lower
Electron Affinity 0.501 higher 0.3 higher
Oxidation States +1 different +3 different
Melting Point 336.53 K (63.38 °C) higher 302.91 K (29.76 °C) higher
Boiling Point 1032 K (758.85 °C) lower 2477 K (2203.85 °C) lower
Density 0.89 lower 5.91 lower
Electron Configuration [Ar]4s1 different [Ar]4s2 3d10 4p1 different
Year Discovered 1807 different 1875 different

higher lower