MHT CET 2024 Chemistry question
Which from following is NOT a lanthanoid element
Answer: (D)
Solution
Lanthanoids are the 14 elements from cerium (Z = 58) to lutetium (Z = 71) following lanthanum (4f series, Z = 57-71). Pm (promethium, Z = 61), Er (erbium, Z = 68) and Yb (ytterbium, Z = 70) all belong to this series.
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