A nuclear transformation is denoted by $X(n, \alpha){ }_3^7 \mathrm{Li}$. Which of the following is the…

A nuclear transformation is denoted by $X(n, \alpha){ }_3^7 \mathrm{Li}$. Which of the following is the nucleus of element $X$ ?
  1. ${ }^{12} \mathrm{C}_6$
  2. ${ }_5^{10} \mathrm{~B}$
  3. ${ }_5^{9} \mathrm{~B}$
  4. ${ }_4^{11} \mathrm{~Be}$

Solution

$\mathrm{X}+{ }_0^1 \mathrm{n} \rightarrow{ }_2^4 \mathrm{He}+{ }_3^7 \mathrm{Li}$

Asked in: JEE Main 2005

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