Flashcards in Radioactive Decay HL Deck (5)
What are the 4 types of radioactive decay?
Beta-Positive (Positron) decay
When a nucleus emits an alpha particle, what happens?
The atom will lose 2 protons and 2 neutrons, meaning that the mass number will decrease by 4 and the atomic number will decrease by 2
What happens in Beta-minus decay?
A neutron changes into a proton and therefore gains an electron, meaning that there is no change in the mass number but the atomic number increases by 1
What happens in Beta-plus (Positron) decay?
A proton changes into a neutron and releases a positron, therefore the mass number hasn't changed but the atomic number decreases by 1