Zirconium vs Molybdenum

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PropertyZr ZirconiumMo Molybdenum
Atomic number4042
SymbolZrMo
NameZirconiumMolybdenum
Categorytransition-metaltransition-metal
Standard Atomic Weight91.224 u95.95 u
Period55
Group46
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s24d2[Kr]5s14d5
Oxidation states[1, 2, 3, 4][-4, -2, -1, 0, 1, 2, 3, 4, 5, 6]
Electronegativity (Pauling)1.332.16
Electron affinity0.426 eV0.744 eV
Density6520 kg/m³1.020000e+4 kg/m³
Melting point1854.85 °C2622.85 °C
Boiling point4408.85 °C4638.85 °C
Discovery year17891778