Q.

Column - I              Column - II    A) Isotones        i) K = 40 and Ca - 40    B) Isotopes        ii) U - 235 and Th - 231    C) Isobars        iii) Protium and Tritium    D) Isodiaphers    iv) C - 14 and O - 16

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a

A - i, B - ii, C - iii, D - iv

b

A - iv, B - iii, C - i, D - ii

c

A - iii, B - ii, C - iv, D - i

d

A - ii, B - iii, C - i, D - iv

answer is B.

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Detailed Solution

Isotones .... same number of neuronsA-IVIsotopes ... same z valueB-IIIIsobars ... same mass numberC-IIsodiaphers ... same vlaue of (n-p)D-II
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Column - I              Column - II    A) Isotones        i) K = 40 and Ca - 40    B) Isotopes        ii) U - 235 and Th - 231    C) Isobars        iii) Protium and Tritium    D) Isodiaphers    iv) C - 14 and O - 16