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Chemistry question...What is wrong with this statement?

The rare earth metals are also called the lanthanides.

Posted - January 5, 2020
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Responses


  • 4624
    Since this question comes from a man who loves to be tricksie...

    'Waht' is spelled what
    and the 'statement' is not a statement but a question.

    Treating the question as a question...

    Had to look up the answer because it's way outside my field.

    The brief version: not all rare earths are lanthanides.

    The long version:
    Scandium and yttrium are not lanthanides because they have some similar but not exactly the same chemical properties. They are rare earths not because they are uncommon, but because they are difficult to get at or isolate.

    Source info for finding the answer:

    Definition of  lanthanide  /ˈlanθənʌɪd/ noun
    1. any of the series of fifteen metallic elements from lanthanum to lutetium in the periodic table (atomic numbers 57–71).


    from Wikipedia -
    The 17  rare-earth elements are cerium (Ce), dysprosium (Dy), erbium (Er), europium (Eu), gadolinium (Gd), holmium (Ho), lanthanum (La), lutetium (Lu), neodymium (Nd), praseodymium (Pr), promethium (Pm), samarium (Sm), scandium (Sc), terbium (Tb), thulium (Tm), ytterbium (Yb), and yttrium (Y).


    This post was edited by inky at January 6, 2020 5:43 AM MST
      January 5, 2020 1:02 PM MST
    5

  • 44603
    Waht was a typo...your answer is correct for the statement.
      January 5, 2020 1:24 PM MST
    4

  • 4624
    Thanks for the pick, Ele.  :)
      January 6, 2020 1:39 AM MST
    2

  • 53504
    Er, um, you know that grammar is my game, not science, so my answer is that typo.

    (Waht What)

    ~
      January 5, 2020 1:03 PM MST
    2

  • 44603
    No...that was actually a typo.
      January 5, 2020 1:23 PM MST
    3

  • 34251
    While all lanthanides are reare earth metals, not all rare earth metals are lanthanides.
      January 5, 2020 1:07 PM MST
    2