### Russian: Некоторые атомы имеют нестабильное ядро, что означает, что они склонны распадаться при малом воздействие или без него.
### English: Some atoms have an balanced nucleus, which means they tend to decay with little or no impact.
### Errors: There is a critical word change to antonym error in the English translation.

### Improved English: Some atoms have an unstable nucleus, which means they tend to decay with little or no impact.
