The nucleus of uranium-238 (92238U{}^{238}_{92}\text{U}92238U) emits three alpha particles and two beta-minus particles to become a nucleus of an isotope of radium.
What is the nucleon number A A\,A and the proton number Z Z\,Z for the nucleus of this radium isotope?
A=226,Z=86A = 226, Z = 86A=226,Z=86
A=226,Z=88A = 226, Z = 88A=226,Z=88
A=232,Z=88A = 232, Z = 88A=232,Z=88
A=230,Z=90A = 230, Z = 90A=230,Z=90
