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Q.

 35X88 is an unstable isotope, decays in two successive steps to produce stable(s) isotope  36Y87 ,as shown as X 88 35  IZII36Y87

The correct statement(s) is/are 

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a

II involve a neutron emission

b

X and Z will always be isotones

c

If I involve β-emission, y and Z must be isotopes

d

I involve a β-emission

answer is A, B, C.

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Detailed Solution

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 Z = X 3688

X and Z are isobars

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