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:

  1. (b) Pm is obtained by synthetic method.

Promethium is not present in nature. It is synthetic radioactive lanthanoid.

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