Question

fill in the blank question
all nuclei that are radioactive and undergo decay in order to gain stability are either above or below the

Explanation:

In nuclear physics, unstable radioactive nuclei that undergo decay to gain stability are located either above or below the band of stability (also known as the belt of stability). The band of stability represents the region on a graph of neutron - proton ratios where stable nuclei are found.

Answer:

band of stability