Compare Elements

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

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Element comparison
Property S Sulfur Na Sodium
Atomic Number 16 higher 11 higher
Symbol S different Na different
Name Sulfur different Sodium different
Atomic Mass 32.07 higher 22.9898 higher
Category Reactive Nonmetals different Alkali Metals different
Period 3 same value 3 same value
Group 16 higher 1 higher
Block p-Block different s-Block different
Standard State Solid same value Solid same value
Electronegativity 2.58 higher 0.93 higher
Atomic Radius 180 lower 227 lower
Ionization Energy 10.36 higher 5.139 higher
Electron Affinity 2.077 higher 0.548 higher
Oxidation States +6, +4, -2 different +1 different
Melting Point 388.36 K (115.21 °C) higher 370.95 K (97.8 °C) higher
Boiling Point 717.75 K (444.6 °C) lower 1156 K (882.85 °C) lower
Density 2.067 higher 0.97 higher
Electron Configuration [Ne]3s2 3p4 different [Ne]3s1 different
Year Discovered Ancient different 1807 different

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