Assertion : 4n+1 series is designated as Neptunium series. Reason : The fourth series is not naturally occuring and Neptunium -237 is the longest -lived member of the series.

Assertion : 4n+1 series is designated as Neptunium series. Reason : T

1.	Assertion : 4n+1 series is designated as Neptunium series. Reason : The fourth series is not naturally occuring and Neptunium -237 is the longest -lived member of the series.
Answer» Both A and R are true and R is the correct EXPLANATION of A Both A and R are true but R is not a correct explanation of A A is true but R is FALSE A is false but R is true Answer :A