The n/p ratio of stable isotopes becomes larger than 1, when the atomic number is larger than ________.

Question

Quizplus · Accepted Answer

n/p ratio of stable isotopes becomes larger than 1 when the atomic number is larger than 20. This is because the repulsive force between protons increase with increasing atomic number, which requires more neutrons to stabilize the nucleus. As a result, elements with higher atomic numbers require more neutrons to maintain stability, leading to a larger n/p ratio.

The N/p Ratio of Stable Isotopes Becomes Larger Than 1