Compare Elements

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

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Element comparison
Property Al Aluminum In Indium
Atomic Number 13 lower 49 lower
Symbol Al different In different
Name Aluminum different Indium different
Atomic Mass 26.9815 lower 114.818 lower
Category Post-transition Metals same value Post-transition Metals same value
Period 3 lower 5 lower
Group 13 same value 13 same value
Block p-Block same value p-Block same value
Standard State Solid same value Solid same value
Electronegativity 1.61 lower 1.78 lower
Atomic Radius 184 lower 193 lower
Ionization Energy 5.986 higher 5.786 higher
Electron Affinity 0.441 higher 0.3 higher
Oxidation States +3 same value +3 same value
Melting Point 933.437 K (660.29 °C) higher 429.75 K (156.6 °C) higher
Boiling Point 2792 K (2518.85 °C) higher 2345 K (2071.85 °C) higher
Density 2.7 lower 7.31 lower
Electron Configuration [Ne]3s2 3p1 different [Kr]5s2 4d10 5p1 different
Year Discovered Ancient different 1863 different

higher lower