1.

Which of thefollowingis notan actinoid ?

Answer»

CURIUM (Z =96 )
CALIFORNIUM (Z=98)
URANIUM ( Z= 92)
Terbium (Z=65)

Solution :Elementswithatomicnumbers`Z=90 -103are calledactinoids.Thereforeterbium (Z= 65) is notan actinoid.Thusoption( d) iscorrect.


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