Scandium vs Titanium

Side-by-side comparison of Scandium (Sc, element 21) and Titanium (Ti, element 22) by atomic structure and physical properties.

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PropertySc Scandium Ti Titanium
Atomic number2122
SymbolScTi
NameScandiumTitanium
Categorytransition-metaltransition-metal
Standard Atomic Weight44.955908 u47.867 u
Period44
Group34
Blockdd
Phase at STPSolidSolid
Electron configuration[Ar]3d14s2[Ar]3d24s2
Oxidation states[0, 1, 2, 3][-2, -1, 0, 1, 2, 3, 4]
Electronegativity (Pauling)1.361.54
Electron affinity0.17938 eV0.0755 eV
Density2990 kg/m³4500 kg/m³
Melting point1540.85 °C1667.85 °C
Boiling point2835.85 °C3286.85 °C
Discovery year18791791

Key Differences

PropertySc ScandiumTi Titanium
Standard Atomic Weight44.955908 u ↓ lower47.867 u ↑ higher
Density2990 kg/m³ ↓ lower4500 kg/m³ ↑ higher
Melting point1540.85 °C ↓ lower1667.85 °C ↑ higher
Boiling point2835.85 °C ↓ lower3286.85 °C ↑ higher
Electronegativity (Pauling)1.36 ↓ lower1.54 ↑ higher
Electron affinity0.17938 eV ↑ higher0.0755 eV ↓ lower
Group3 4
Electron configuration[Ar]3d14s2 [Ar]3d24s2
Discovery year1879 1791