Question

A new element is produced after emission of a beta particle with the atomic number :

• A. increased by 2
  
• B. decreased by 1
  
• C. decreased by 2
  
• D. increased by 1

Answer 1

Answer: (D)

increased by 1

A new element is produced after the emission of a beta particle with the atomic number increased by 1.

For example, C-14 emits a beta particle to form N-14. The atomic number increases from 6 to 7.

${}_6{C}^{14}{\to }_7{N}^{14}{+}_{-1}{e}^0$

Hence, the correct option is D.