D And F Block Elements Question 403
The Ce (Z = 58) belongs to IVth group of periodic table. If it furnish one $ \alpha $ particle to form an element ‘X’, then X belongs to
Options:
A) III Group
B) II group
C) 1st group
D) zero group
Show Answer
Answer:
Correct Answer: B
Solution:
$ _{58}Ce $ is lanthanoid. Lanthanoid are from 57 to 71 and belong to the IIIrd group. Hence $ _{56}X $ element on emission of one $ \alpha $ particle belongs to IInd group.
BETA
