In neutron capture by an atomic nucleus, the atomic number changes by
A) −2.
B) −1.
C) 0.
D) +1.
E) +2.

Name: In neutron capture by an atomic nucleus, the atomic number changes by A) −2. B) −1. C) 0. D) +1. E) +2.
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When a nucleus captures a neutron, its atomic number, which is the number of protons, remains unchanged. The neutron adds to the nucleus without altering the charge or atomic number.

In Neutron Capture by an Atomic Nucleus, the Atomic Number