What type of decay involves the emission of a helium nucleus?

What type of decay involves the emission of a helium nucleus?

Step 1: Understand what decay means. Decay is a process where an unstable atomic nucleus loses energy by emitting radiation.
Step 2: Learn about different types of decay. There are several types, including alpha decay, beta decay, and gamma decay.
Step 3: Focus on alpha decay. Alpha decay is a specific type of decay.
Step 4: Identify what is emitted during alpha decay. During alpha decay, an alpha particle is emitted.
Step 5: Know what an alpha particle is. An alpha particle is made up of 2 protons and 2 neutrons, which is the same as a helium nucleus.
Step 6: Conclude that alpha decay involves the emission of a helium nucleus.

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