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A periodic table has 18 groups numbered ...

A periodic table has 18 groups numbered from 1 to 18. What will be the group number of the final daughter nucleus formed , if `._(63)Eu^(150)` shows sequential decay emitting `1 alpha and 1 beta` particles.

A

3

B

2

C

4

D

5

Text Solution

Verified by Experts

The correct Answer is:
A
`Eu_(63)^(150) overset(-alpha) rarr x_(61)^(145) overset(-beta)rarr ((1)/(62))^(146)`
From 58 to 71 all are 4 f elements belong to 3rd group
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