Observe the following statements regarding isotones i) `.^(59)K_(19)` and `.^(40)Ca_(20)` are isotones ii) Nuclides having different atomic numbers `(z)` and mass number `(A)` but same number of neutrons `(n)` are called Isotones iii) `.^(19)F_(9)` and `.^(23)Na_(11)` are isotones The correct answer isA. i, ii and iii are correctB. only i and ii are correctC. only I and iii are correctD. only ii and iii are correct

Observe the following statements regarding isotones i) `.^(59)K_(19)`

1.	Observe the following statements regarding isotones i) `.^(59)K_(19)` and `.^(40)Ca_(20)` are isotones ii) Nuclides having different atomic numbers `(z)` and mass number `(A)` but same number of neutrons `(n)` are called Isotones iii) `.^(19)F_(9)` and `.^(23)Na_(11)` are isotones The correct answer isA. i, ii and iii are correctB. only i and ii are correctC. only I and iii are correctD. only ii and iii are correct
Answer» Correct Answer - B

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