D-And F-Block Elements Ques 513
Question: The Ce (Z = 58) belongs to IIIrd group of periodic table. If it furnish one $ \alpha $ particle to form an element ‘X’, then X belongs to
Options:
A) IIIrd group
B) IInd group
C) Ist group
D) zero group
Show Answer
Answer:
Correct Answer: B
Solution:
$ _{58}Ce $ is lanthanoid. Lanthanoid are from 57 to 71 all present in IIIrd group. Hence $ _{58}Ce $ forms $ _{56}X $ element on emission of one $ \alpha $ particle with belongs to IInd group.
