Qual item ausente completaria essa reaĆ§Ć£o de decaimento alfa?

Qual item ausente completaria essa reaĆ§Ć£o de decaimento alfa? Responda: #”Option” C-> “”_2^4He# ExplicaĆ§Ć£o: #”The decay would have helium left after the reaction.”# #””_98^251 Cf ā†’ “”_96^247Cm +””_2^4He # #”We know the atomic masses of the elements but we do not know”# #”know the number of protons of the substances .”# #” But for this … Ler mais