The dand fblock elements - Result Question 84
####84. Among the lanthanides the one obtained by synthetic method is
[1994]
(a) $Lu$
(b) $Pm$
(c) $Pr$
(d) Gd
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Solution:
- (b) Pm is obtained by synthetic method.
Promethium is not present in nature. It is synthetic radioactive lanthanoid.