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Part A Identify the nuclide produced when neptunium-237 decays by alpha emission: 23 Np He + ? 93 Express your answer as an isotope using prescripts. ▸ View Available Hint(s) xa 233. 91 Submit Part B ΑΣΦ Xz a b Submit داد 18 ΑΣΦ X Previous Answers - t O Am A chemical reaction does not occur for this question. You have already submitted this answer. Enter a new answer. No credit lost. Try again. PAG A chemical reaction does not occur for this question. X ? Identify the nuclide produced when phosphorus-32 decays by beta emissionPe + ? Express your answer as an isotope using prescripts. View Available Hint(s) FERRE

Learning Goal: To predict the products of alpha emission, beta emission, positron emission, and electron capture. Radioactivity is the spontaneous emission of radiation from an unstable nucleus. There are five major types of radioactive decay: 1. Alpha (a) radiation consists of helium nuclei. The helium nucleus is a small particle containing two protons and two neutrons (He). Balancing a decay equation There are two main rules to remember when balancing nuclear equations: 1. The total of the superscripts in the reactants and products must be the same. 2. The total of the subscripts in the reactants and products must be the same. For an isotope of an element, the superscripts are mass numbers, and the subcripts are atomic numbers: Chemical symbol Where the mass number (A) is the sum of the number of proton and number of neutrons in the nucleus, atomic number (Z) is the number of protons in the nucleus, and chemical symbol (X) is the symbol of the specific element. Part A Mass number Atomic number - Ax N X-