Question

The number of protons, neutrons and electrons in ${}_{92}{\text{U}}^{235}$ respectively, are:

• A. 92, 92 and 143
• B. 92, 143 and 92
• C. 143, 92 and 92
• D. 92, 235 and 92

Answer 1

The correct option is B 92, 143 and 92

${}_{92}{\text{U}}^{235}$ has 92 protons, 92 electrons and 235 - 92 = 143 neutrons.