What is the nuclear decay equation for uranium-238 to strontium-90?

Answer 1

The equation for the beta decay of 87Kr is:

3687Kr --> 3787Rb + -10e

where -10e represents a negative beta particle or electron.

Answer 2

238U --> 234Th + 4He; 4.51E9 years, alpha decay

234Th --> 234Pa + e-; 24.10 days, beta decay

234Pa --> 234U + e-; 6.66 hours, beta decay

234U --> 230Th + 4He; 2.48E5 years, alpha decay

230Th --> 226Ra + 4He; 8.0E4 years, alpha decay

226Ra --> 222Rn + 4He; 1622 years, alpha decay

222Rn --> 218Po + 4He; 3.825 days, alpha decay

218Po --> 214Pb + 4He, 218At + e-; 3.05 minutes, alpha/beta decay

214Pb --> 214Bi + e-; 26.8 minutes, beta decay

218At --> 214Bi + 4He, 218Rn + e-; ~2 seconds, alpha/beta decay

214Bi --> 210Tl + 4He, 214Po + e-; 19.7 minutes, alpha/beta decay

218Rn --> 214Po + 4He; 19E-3 seconds, alpha decay

210Tl --> 210Pb + e-; 1.32 minutes, beta decay

214Po --> 210Pb + 4He; 164E-6 seconds, alpha decay

210Pb --> 210Bi + e-; 19.4 years, beta decay

210Bi --> 206Tl + 4He, 210Po + e-; 2.6E6 years, alpha/beta decay

206Tl --> 206Pb + e-; 4.20 minutes, beta decay

210Po --> 206Pb + 4He; 138.4 days, alpha decay

206Pb; stable

Answer 3

This transmutation does not usually occur by decay, instead Strontium-90 is a fission product. But to get Uranium-238 to fission requires the high energy 15MeV fusion neutrons produced in a hydrogen bomb.

Answer 4

The equation for the beta decay of 86Rb:3786Rb --> 3886Sr+ -10e

where the -10e represents a beta particle or electron.