lesson
What Makes a Nucleus Stable?
Identify the ratio of neutrons to protons that produces a stable nucleus and explain why this ratio changes for heavier elements.

Identify the ratio of neutrons to protons that produces a stable nucleus and explain why this ratio changes for heavier elements.
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8 lessons
Understand the composition of the atom, identify and notate isotopes, and explain how the strong nuclear force holds the nucleus together and what ratio of neutrons to protons produces stability.