Chemistry / Chem 2510 · Atom · ~20 seconds
Twin: Alpha Decay
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Alpha decay emits a helium nucleus, lowering mass number by four and atomic number by two, occurring primarily among heavy nuclei.
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Polonium-210 undergoes alpha decay to form lead-206, losing two protons and two neutrons as the emitted particle.
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Alpha decay changes both mass and atomic number together — mistaking it for the mode changing only atomic number is this twin's error.