Stable and Unstable Nuclei Flashcards
1
Q
State the ranges of the strong nuclear force?
A
- Less than 0.5fm - repulsion
- 0.5fm - 3fm - Attraction
- Beyond 3fm - negligible
2
Q
Why are large nuclei unstable?
A
It’s hard for the strong force to keep the nucleons together
3
Q
What’s the nucleon number and the atomic number of an alpha particle?
A
Nucleon number - 4
Atomic number - 2
4
Q
What is beta minus decay?
A
- A neutron turns into a proton and electron
- The electron and antineutrino is emitted
- Caused by the weak interaction
5
Q
In which isotopes does beta decay happen?
A
Neutron rich
6
Q
Why is an antineutrino particle released?
A
Conservation of energy and momentum
