Stable and unstable nuclei (AQA A-Level Physics): Flashcards

Holds nucleus together, counteracts proton repulsion

$0.5$ to $3$ fm

Repulsive

Drops off, electrostatic repulsion dominates

$2$ protons and $2$ neutrons

Decreases by $2$

Decreases by $4$

Increases by $1$

Remains the same

Carries away missing energy, ensures conservation laws