Use the information in the following chart to answer the question below. Substance Density (g/cm³) aluminum 2.7 iron 7.9 gold 19.3 You just found a metallic object in a creek bed. You have found its mass to be 96.5 g, and it displaces 5 mL of water. What is the substance? aluminum iron gold none of the above

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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