26.5 - Disintegration Process Flashcards
1
Q
What is a nuclide?
A
The nucleus of a particular isotope
2
Q
What happens in alpha-emission?
A
The mass number decreases by 4, and the atomic number decreases by 2
3
Q
What happens in beta-emission?
A
The mass number is unchanged, but the atomic number increases by 1
4
Q
Why does the atomic number increase?
A
Because a neutron becomes a proton and beta-particle
5
Q
What else must be emitted in beta-decay?
A
An electron antineutrino
6
Q
Why?
A
To preserve lepton number
7
Q
What happens during beta-plus emission?
A
The atomic number decreases by 1
8
Q
What two things are emitted during beta-plus emission?
A
A positron and electron neutrino
