What happens to the atomic number of an element when an α particle is emitted?

Name: What happens to the atomic number of an element when an α particle is emitted?
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When an α particle is emitted, the atomic number of the element decreases by 2 because an α particle is a helium nucleus, which has a mass number of 4 and an atomic number of 2. Thus, when the α particle is emitted, the remaining atom has 2 fewer protons, which means the atomic number decreases by 2.

What Happens to the Atomic Number of an Element When