is it any good/worth buying
radioactive elements are dangerous, even with less half life
Half Life: T/2=ln(2)λ
t50%=0.693/k
Yes it's very good
Unless Half Life 3 is confirmed, my answer will stay NO
Half life:
For zero order reactions: t_(1/2)= [R]_0/2k
For first order reactions: t_(1/2) = ln(2)λ = 0.693/k
where, k is the rate constant of the reaction.
I heard the third one is good