CBSE Class 12-science Answered
Give a note on the chemical reaction of lanthanoids.
Asked by Topperlearning User | 27 Jun, 2014, 03:42: PM
Expert Answer
The earlier members of the series behave like calcium.
Ln3+(aq) + 3e– 
Ln(s)
Ln(s)The Eo value for the above reaction ranges from –2.2 to –2.4 V. They show following types of reaction
Ln + Acid H2
H2 Ln + H2O Ln(OH)3 + H2
Ln(OH)3 + H2Ln + N 
LnN
LnNLn + C LnC2
LnC2Ln + S Ln2S3
Ln2S3
Answered by | 27 Jun, 2014, 05:42: PM
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