An atom of mass number 15 and atomic number 7 captures an -particle and then emits a proton. The mass number and atomic number of the resulting atom will be respectively

Step-by-step solution

According to the law of conservation of charge, we get 7+2=1+Z Z=8 According to the law of conservation of mass, we get 15+4=1+A A=18 Hence, the resulting atom has mass number 18 and atomic number 8 .