Radioactive Decay HL Flashcards Preview

Physics > Radioactive Decay HL > Flashcards

Flashcards in Radioactive Decay HL Deck (5)
Loading flashcards...

What are the 4 types of radioactive decay?

Alpha decay
Beta-Minus decay
Beta-Positive (Positron) decay
Neutron 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


What happens when a nucleus emits a proton?

The mass number decreases by 1 as it has lost a neutron but the atomic number stays the same.