WBJEE · Chemistry · Structure of Atom
A radioactive atom \(\mathrm{X}_{\mathrm{Y}}\) emits two \(\alpha\) particles and one \(\beta\) particle successively. The number of neutrons in the nucleus of the product will be
- A \(\mathrm{X}-4-\mathrm{Y}\)
- B \(\mathrm{X}-\mathrm{Y}-5\)
- C \(\mathrm{X}-\mathrm{Y}-3\)
- D \(\mathrm{X}-\mathrm{Y}-6\)
Answer & Solution
Correct Answer
(B) \(\mathrm{X}-\mathrm{Y}-5\)
Step-by-step Solution
Detailed explanation
Hints: \(\begin{aligned} \text { Number of neutrons } & =\text { Mass no. }- \text { Atomic no. } \\ & =\mathrm{X}-8-\mathrm{Y}+3 \\ & =\mathrm{X}-\mathrm{Y}-5 \end{aligned}\)
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