Compare Elements

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

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Element comparison
Property Rb Rubidium Te Tellurium
Atomic Number 37 lower 52 lower
Symbol Rb different Te different
Name Rubidium different Tellurium different
Atomic Mass 85.468 lower 127.6 lower
Category Alkali Metals different Metalloids different
Period 5 same value 5 same value
Group 1 lower 16 lower
Block s-Block different p-Block different
Standard State Solid same value Solid same value
Electronegativity 0.82 lower 2.1 lower
Atomic Radius 303 higher 206 higher
Ionization Energy 4.177 lower 9.01 lower
Electron Affinity 0.468 lower 1.971 lower
Oxidation States +1 different +6, +4, -2 different
Melting Point 312.46 K (39.31 °C) lower 722.66 K (449.51 °C) lower
Boiling Point 961 K (687.85 °C) lower 1261 K (987.85 °C) lower
Density 1.53 lower 6.232 lower
Electron Configuration [Kr]5s1 different [Kr]5s2 4d10 5p4 different
Year Discovered 1861 different 1782 different

higher lower