Ru-99 Isotope Information and Examples of Enriched Ru-99 Applications:

Ruthenium-99 isotope (Ru-99 isotope, 99Ru isotope)

  • Ru-99 isotope is used for Mössbauer studies;

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Ru-99 Properties:

PropertyRu-99
Number of Protons99
Abundance0.1276
Atomic Number44
Atomic Radius134
Atomic Mass98.91
Spin2.5
Quadrupole Moment0.079
Electronegativity (Paulig)2.2
Electron Configuration Blockd
VDW Radius (mm3)234
Mass Uncertainty7e-06
g-factor (g value)-0.256
Half LifeStable

Ruthenium Information

Hard white metallic transition element. Found with platinum, used as a catalyst in some platinum alloys. Dissolves in fused alkalis, and is not attacked by acids. Reacts with halogens and oxygen at high temperatures. Isolated in 1844 by K.K. Klaus.

Used to harden platinum and palladium. Aircraft magnetos use platinum alloy with 10% ruthenium.

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