What change in the mass number of a nucleus occurs when the nucleus emits an alpha particle? 1. The mass number decreases by 2. The mass number decreases by 4. The mass number increases by 4 The mass number increases by 2.
1 answer
Question:
What change in the mass number of a nucleus occurs when the nucleus emits an alpha particle? 1. The mass number decreases by 2. The mass number decreases by 4. The mass number increases by 4 The mass number increases by 2.
Answers
Alpha particles are respective to the helium-4 ion. Therefore it has a mass of four and a positive charge of two. The correct answer is the mass number increases by 4.
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