Phosphorus vs Technetium

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PropertyP PhosphorusTc Technetium
Atomic number1543
SymbolPTc
NamePhosphorusTechnetium
Categorynonmetaltransition-metal
Standard Atomic Weight30.973762 u98 u
Period35
Group157
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p3[Kr]5s24d5
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-3, -1, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)2.191.9
Electron affinity0.7466 eV0.55 eV
Density1820 kg/m³1.100000e+4 kg/m³
Melting point44.15 °C2156.85 °C
Boiling point280.5 °C4264.85 °C
Discovery year16691937