Ytterbium

Koushik 26/06/2026 19:58:08 Updated 26/06/2026 19:58:08
Property Value
Atomic Number 70
Element Ytterbium
Symbol Yb
Atomic Mass 173.045 u
Number of Neutrons 103 (most common isotope, Ytterbium-174)
Number of Protons 70
Number of Electrons 70
Period 6
Group Lanthanide (no fixed group number)
Phase Solid
Radioactive No (some isotopes are radioactive)
Natural Yes
Metal Yes
Nonmetal No
Metalloid No
Type Lanthanide
Atomic Radius 222 pm
Electronegativity 1.10 (Pauling scale)
First Ionization Energy 6.254 eV
Density 6.90 g/cm³
Melting Point 824 °C
Boiling Point 1196 °C
Number of Isotopes 7 naturally occurring (Yb-168, Yb-170, Yb-171, Yb-172, Yb-173, Yb-174, Yb-176)
Discoverer Jean Charles Galissard de Marignac
Year 1878
Specific Heat 0.155 J/g·K
Number of Shells 6
Number of Valence Electrons 2
Tags: Tutorials Chemistry tutorial step by step learn how to guide examples
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