Question
Mon August 22, 2011 By: Anupama Ray

Why are the lanthanides renamed as lanthanoids?

Expert Reply
Tue August 23, 2011
IUPAC currently recommended the name lanthanoid for previously known lanthanide. It is because the suffix "-ide" generally indicates negative ions whereas the suffix "-oid" indicates similarity to one of the members of the containing family of elements. 
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