different between thulium vs lanthanide

English

Etymology

Thule (a poetic name for Scandinavia) +? -ium

Pronunciation

• enPR: th?'l??m, IPA^(key): /??ju?li?m/; enPR: tho?o'l??m, IPA^(key): /??u?li?m/

Noun

thulium (uncountable)

1. A metallic chemical element (symbol Tm) with atomic number 69: a fairly soft, easily workable metal with a bright silvery-gray lustre.

Derived terms

• thulia
• thulium oxide

Related terms

• Thule
• thulite

Translations

Danish

Noun

thulium

1. thulium
   • 2006, Bogen Om Grundstofferne, Gyldendal Uddannelse ?ISBN, page 149

     Herefter skæres tantalhylsteret af på en drejebænk, og stangen af thulium er klar til salg.

   • 1931, Fysisk tidsskrift

     ... næsten alle de sjældneste Grundstoffer — Terbium, Thulium etc.

   • 1973, Kongelige Danske videnskabernes selskab, Carlsbergfondet (Copenhagen, Denmark)., Oversigt over selskabets virksomhed

     ... til fotoelektronspektret af metallisk thulium, ...

Dutch

Pronunciation

Noun

thulium n (uncountable)

1. thulium

French

Pronunciation

• IPA^(key): /ty.lj?m/

Noun

thulium m (uncountable)

1. thulium

Further reading

• “thulium” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Latin

Pronunciation

• (Classical) IPA^(key): /?t?u?.li.um/, [?t??u?li???]
• (Ecclesiastical) IPA^(key): /?tu.li.um/, [?t?u?lium]

Noun

th?lium n (genitive th?li?); second declension

1. thulium

Declension

Second-declension noun (neuter).

Limburgish

Pronunciation

• IPA^(key): [?ðy????m]

Noun

thulium n

1. (uncountable) thulium
2. A part of thulium

Inflection

English

Pronunciation

• enPR: l?n'th?n?d, IPA^(key): /?læn??na?d/

Noun

lanthanide (plural lanthanides)

1. (chemistry) Any of the 14 rare earth elements from cerium (or from lanthanum) to lutetium in the periodic table; because their outermost orbitals are empty, they have very similar chemistry; below them are the actinides.

Usage notes

• According to IUPAC - "Although lanthanoid means 'like lanthanum' and so should not include lanthanum, lanthanum has become included by common usage. Similarly, actinoid. The ending 'ide' normally indicates a negative ion, and therefore lanthanoid and actinoid are preferred to lanthanide and actinide. However, lanthanide and actinide are still allowed owing to wide current use."

Synonyms

• lanthanate (obsolete)
• lanthanoid (including lanthanum)
• lanthanon (proposed to avoid confusion with the usual meaning in chemistry of -ide)
• rare-earth element

Derived terms

• lanthanide contraction
• lanthanide series

Translations

See also

• cerium
• praseodymium
• neodymium
• promethium
• samarium
• europium
• gadolinium
• terbium
• dysprosium
• holmium
• erbium
• thulium
• ytterbium
• lutetium