PH-695
Radioactive decay
Physics · Secondary 3 · Hard · Radioactive decay
A polonium nucleus has nucleon number 210 and proton number 84. It emits an alpha particle. What are the nucleon number and proton number of the new nucleus?
- Nucleon number 206, proton number 82
- Nucleon number 210, proton number 84
- Nucleon number 214, proton number 86
- Nucleon number 210, proton number 82
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