KVPY 2020-21 SB SX Exam Previous Papers

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Question : 48 of 120

Marks: +1, -0

A nucleus

X

captures a

\β

particle and then emitsa neutron and

\γ

ray to form

{Y} . {X}

and

{Y}

are :-

isomorphs
isotopes
isobars
isotones

Solution:

{ }_{{P}}^{{Q}} {X}+{ }_{-1}^{0} \β\→{ }_{{P}-1}^{{Q}} {Y}

X and Y has same mass number, hence they are isotones.

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