Hey I'm new to this forum, just want to say hi! I'm not sure if this is the rite place to put this but sry if i posted in the wrong section >.< I'm actually working on an assignment in my natural science course and I'm stuck on this question cause i'm not sure how to use the variables in the equation. The californium-242 nucleus 242/98 Cf decays via alpha decay with half life of 210s A)what is its daughter nucleus? B) if we originally have 10 000 californium-242 nuclei, how many will remain as californium after one half-life? Explain C)if we originally have 10 000 californium-242 nuclei, how many will remain as californium after five half-life? Explain Ok so how I view this... I need to use the Decay Law equation to find the daughter nucleus rite? since its going through alpha decay. So equation would be N(t) = N e^(-λt) N(210) = N e^(-λ210) is N = 242? So... wuts e? and λ?