Po undergoes four decay reactions: B, a, B, a. Step 1. 218 218 Po undergoes B decay to give 35° At Step 2. 85 At undergoes a decay to give 214 Bi In the third step, Bi-214 undergoes B decay. What is the product of this step? symbol = mass number = atomic number =

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Q: mass

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.