chemisry help please!?

Question

what particle is emitted durring the nuclear decay of a Po-218 atom?



#2) If a scientist purifies 1.0 gram of radium-226, how many years must pass before only 0.50 gram of the original radium-226 radium sample remains?

#3)decay of c-14 equation? atomic # and mass too
14/6C ---> _____ + 0/-1e

Answer 1

#1) Alpha particle 4/2 He

#2) 1622 years

#3) 14/7 N

Answer 2

I dont think we are here to do YOUR homwork...