Element 69

Element 69. A rareearth element symbol Tm of the lanthanide group atomic number 69 atomic weight 1689342 reacts slowly with water soluble in dilute acids melts at 1550°C boils at 1727°C the dust is a fire hazard used as xray source and to make ferrites.

The Fifth Element #69 I’ve been reading a fascinating book Leonard Shlain’s The Alphabet Versus the Goddess The Conflict Between Word and Image (New York Viking 1998) Shlain’s thesis is that the invention of the alphabet was the cause of immense changes in primitive society upsetting previously widespread norms of gender equality and.

physics.nist.gov Elemental Data Index: 69 Thulium

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69 Thulium Tm Atomic Weight 168934 22(2) Ionization Energy 618431 eV Groundstate Level 2 F ° 7 / 2 Groundstate Configuration [Xe]4f 13 6s 2 Click a database icon to retrieve data on Thulium Atomic Spectroscopic Data Bibliographic Databases on Atomic Spectroscopy XRay and Gamma Ray Data Radiation Dosimetry Data Nuclear Physics Data Condensed Matter.

Element 69 definition of Element 69 by The Free Dictionary

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