[Latest] How old is Ytterbium now?

Living Person

Ytterbium
is

As of April 16, 2026

148 years old
approximately!

* Calculated from Wikipedia data.
Accuracy is not guaranteed.

Ytterbium, ₇₀Yb

Ytterbium
Pronunciation	/ɪˈtɜːrbiəm/ ​(ih-TUR-bee-əm)
Appearance	silvery white; with a pale yellow tint
Standard atomic weight Ar°(Yb)
	173.045±0.010 173.05±0.02 (abridged)
Ytterbium 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 – ↑ Yb ↓ No thulium ← ytterbium → lutetium
Atomic number (Z)	70
Group	f-block groups (no number)
Period	period 6
Block	f-block
Electron configuration	[Xe] 4f 6s
Electrons per shell	2, 8, 18, 32, 8, 2
Physical properties
Phase at STP	solid
Melting point	1097 K ​(824 °C, ​1515 °F)
Boiling point	1469 K ​(1196 °C, ​2185 °F)
Density (at 20° C)	6.967 g/cm
when liquid (at m.p.)	6.21 g/cm
Heat of fusion	7.66 kJ/mol
Heat of vaporization	129 kJ/mol
Molar heat capacity	26.74 J/(mol·K)
Specific heat capacity	154.522 J/(kg·K)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 736 813 910 1047 (1266) (1465)
Atomic properties
Oxidation states	common: +3 +1, +2
Electronegativity	Pauling scale: 1.1 (?)
Ionization energies	1st: 603.4 kJ/mol 2nd: 1174.8 kJ/mol 3rd: 2417 kJ/mol
Atomic radius	empirical: 176 pm
Covalent radius	187±8 pm
Spectral lines of ytterbium
Other properties
Natural occurrence	primordial
Crystal structure	​face-centered cubic (fcc) (cF4)
Lattice constants	a = 548.46 pm (at 20 °C)
Thermal expansion	24.31×10/K (at 20 °C)
Thermal conductivity	38.5 W/(m⋅K)
Electrical resistivity	β, poly: 0.250 µΩ⋅m (at r.t.)
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+249.0×10 cm/mol (2928 K)
Young's modulus	β form: 23.9 GPa
Shear modulus	β form: 9.9 GPa
Bulk modulus	β form: 30.5 GPa
Speed of sound thin rod	1590 m/s (at 20 °C)
Poisson ratio	β form: 0.207
Vickers hardness	205–250 MPa
Brinell hardness	340–440 MPa
CAS Number	7440-64-4
History
Naming	after Ytterby (Sweden), where it was mined
Discovery	Jean Charles Galissard de Marignac (1878)
First isolation	Wilhelm Klemm and Heinrich Bommer (1936)
Isotopes of ytterbium v e
Main isotopes Decay Isotope abun­dance half-life (t1/2) mode pro­duct Yb synth 56.7 h ε Tm Yb 0.126% stable Yb synth 32.014 d ε Tm Yb 3.02% stable Yb 14.2% stable Yb 21.8% stable Yb 16.1% stable Yb 31.9% stable Yb synth 4.185 d β Lu Yb 12.9% stable
Category: Ytterbium view talk edit | references

Wikipedia Categories

• Ytterbium
• Lanthanides
• Chemical elements
• Rare earth elements
• Suspected teratogens
• Pages including recorded pronunciations
• Chemical elements with face-centered cubic structure

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