radioactivity Flashcards
4 types of radiation
alpha beta gamma and neutrons
where is it emitted from
nucleus of an unstable atom
what is alpha made up of
2 protons + 2 neutrons
what is the nature of alpha
particle
what id alpha absotbed by
paper or skin
what is alphas range in air
2-3 cm
what is alphas ionasition power
the most
what is alphas mass number
4
what is alpha’s atomic number
2
what is beta made up of
fast moving electrons
what is betas nature
particle
what does beta get absotbed by
0.5 of alummium
what is betas range in air
1-2 m
what is betas ionasition power
middle
what id betas mass number
0
what is beta’s atomic number
-1
what is gamma made up of
electro magnetic wave
what is the nature of gamma
wave
what is gamma absotbed by
2-3 cm of lead
what is gammas range in air
unlimited
what is gammas ionasition power
least
what happens when alpha decays
mass number decreases by 4
atomic number decreases by 2
whats happens when beta decays
mass number stays the same
atomic number increases by 1
what happens when gamma decays
proton number does not change so no new element
