Which of the following particles cannot be changed without changing the identity of the element?

Question

A) neutron
B) neutrino particle
C) proton
D) electron

Answer 1

C) proton

The identity of an element is determined by the number of protons in its nucleus. Changing the number of protons will result in a different element, whereas neutrons and electrons can be changed without altering the fundamental identity of the element. Neutrinos are neutral particles that do not affect the identity of the element at all.