PH-2080
Radioactive decay
Physics · Secondary 4 · Hard · Radioactive decay
A radioactive isotope of element X has 90 protons and 140 neutrons. It undergoes one alpha decay followed by one beta () decay. What are the proton number and nucleon number of the final nucleus?
A 88 protons, nucleon number 228
B 88 protons, nucleon number 230
C 89 protons, nucleon number 228
D 89 protons, nucleon number 230
A 88 protons, nucleon number 228
B 88 protons, nucleon number 230
C 89 protons, nucleon number 228
D 89 protons, nucleon number 230
- 88 protons, nucleon number 232
- 88 protons, nucleon number 234
- 89 protons, nucleon number 226
- 89 protons, nucleon number 234
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