Question

If three neutrons are added to the nuclei of ${}_{92}{U}^{235}$, the new nucleus will have an atomic number of

• A. 89
• B. 95
• C. 90
• D. 92

Answer 1

The correct option is D

92

There will be no change in atomic number by addition of neutrons. The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom. It is identical to the charge number of the nucleus.