Question

On bombardment of a neutron with Boron, $\alpha$ -particle is emitted and product nuclei formed is:

• A. ${}_6{C}^{12}$
  
  
  
• B. ${}_{3}L{i}^6$
  
• C. ${}_{3}L{i}^7$
  
• D. ${}_{4}B{e}^9$

Answer 1

The correct option is C

${}_{3}L{i}^7$

When an alpha particle is emitted 2 protons and 2 neutrons will be lost.

${}_5{B}^{10}{+}_0{n}^1{\to }_{3}L{i}^7{+}_{2}H{e}^4$