Compare Elements

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

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Element comparison
Property Te Tellurium Sr Strontium
Atomic Number 52 higher 38 higher
Symbol Te different Sr different
Name Tellurium different Strontium different
Atomic Mass 127.6 higher 87.62 higher
Category Metalloids different Alkaline Earth Metals different
Period 5 same value 5 same value
Group 16 higher 2 higher
Block p-Block different s-Block different
Standard State Solid same value Solid same value
Electronegativity 2.1 higher 0.95 higher
Atomic Radius 206 lower 249 lower
Ionization Energy 9.01 higher 5.695 higher
Electron Affinity 1.971 no data — no data
Oxidation States +6, +4, -2 different +2 different
Melting Point 722.66 K (449.51 °C) lower 1050 K (776.85 °C) lower
Boiling Point 1261 K (987.85 °C) lower 1655 K (1381.85 °C) lower
Density 6.232 higher 2.64 higher
Electron Configuration [Kr]5s2 4d10 5p4 different [Kr]5s2 different
Year Discovered 1782 different 1790 different

higher lower