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Assertion : The fourth series (4n+1) starts with plutonium -241 and ends with bismuth -209 is known as Neptunium series. Reason : Neptunium is a naturally occuring element

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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 :C


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