A) \[Ar\] is used in electric bulbs
B) \[Kr\] is obtained during radioactive disintegration
C) Half life of \[Rn\] is only 3.8 days
D) \[He\] is used in producing very low temperature
Correct Answer: B
Solution :
Not AvailableYou need to login to perform this action.
You will be redirected in
3 sec