Short answerEasy1 mark
10(c)
An atomic nucleus A is composed of 84 protons and 128 neutrons. The nucleus. A emits an alpha particle and is transformed into a nucleus B.
The nucleus B emits a beta particle and is transformed into a nucleus C. What is the composition of C ?
Topic: Nuclear physics / radioactivity
Previous-year question practice database
Answer
Exam answer
After β⁻ emission, the mass number stays the same and the proton number increases by 1; neutron number decreases by 1.
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