[Latest] How old is Scandium now?

Living Person

Scandium
is

As of April 16, 2026

147 years old
approximately!

* Calculated from Wikipedia data.
Accuracy is not guaranteed.

Scandium, ₂₁Sc

Scandium
Pronunciation	/ˈskændiəm/ ​(SKAN-dee-əm)
Appearance	silvery white
Standard atomic weight Ar°(Sc)
	44.955907±0.000004 44.956±0.001 (abridged)
Scandium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson – ↑ Sc ↓ Y calcium ← scandium → titanium
Atomic number (Z)	21
Group	group 3
Period	period 4
Block	d-block
Electron configuration	[Ar] 3d 4s
Electrons per shell	2, 8, 9, 2
Physical properties
Phase at STP	solid
Melting point	1814 K ​(1541 °C, ​2806 °F)
Boiling point	3109 K ​(2836 °C, ​5136 °F)
Density (at 20° C)	2.989 g/cm
when liquid (at m.p.)	2.80 g/cm
Heat of fusion	14.1 kJ/mol
Heat of vaporization	332.7 kJ/mol
Molar heat capacity	25.52 J/(mol·K)
Specific heat capacity	567.666 J/(kg·K)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1645 1804 (2006) (2266) (2613) (3101)
Atomic properties
Oxidation states	common: +3 0, +1, +2
Electronegativity	Pauling scale: 1.36
Ionization energies	1st: 633.1 kJ/mol 2nd: 1235.0 kJ/mol 3rd: 2388.6 kJ/mol (more)
Atomic radius	empirical: 162 pm
Covalent radius	170±7 pm
Van der Waals radius	211 pm
Spectral lines of scandium
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal close-packed (hcp) (hP2)
Lattice constants	a = 330.89 pm c = 526.80 pm (at 20 °C)
Thermal expansion	9.97×10/K (at 20 °C)
Thermal conductivity	15.8 W/(m⋅K)
Electrical resistivity	α, poly: 562 nΩ⋅m (at r.t., calculated)
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+315.0×10 cm/mol (292 K)
Young's modulus	74.4 GPa
Shear modulus	29.1 GPa
Bulk modulus	56.6 GPa
Poisson ratio	0.279
Brinell hardness	736–1200 MPa
CAS Number	7440-20-2
History
Naming	after Scandinavia
Prediction	Dmitri Mendeleev (1871)
Discovery	Lars Fredrik Nilson (1879)
First isolation	W. Fischer, K. Brünger, H. Grieneisen (1937)
Isotopes of scandium v e
Main isotopes Decay Isotope abun­dance half-life (t1/2) mode pro­duct Sc synth 3.891 h β Ca Sc synth 4.042 h β Ca Sc synth 58.61 h IT Sc β Ca Sc 100% stable Sc synth 83.757 d β Ti Sc synth 3.3492 d β Ti Sc synth 43.67 h β Ti
Category: Scandium view talk edit | references

Wikipedia Categories

• Scandium
• Chemical elements
• Transition metals
• Rare earth elements
• CS1: long volume value
• Pages including recorded pronunciations
• Vague or ambiguous time from February 2020
• Chemical elements predicted by Dmitri Mendeleev
• Chemical elements with hexagonal close-packed structure

Look up "Scandium" on Wikipedia

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