Examples 1 238 u undergoesalphadecaywritetheequation

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Unformatted text preview: ss number (A) and loss o f 2 in atomic number (Z). · Beta decay occurs when a nucleus changes into another nucleus and gives off a ß­particle, which is an electron 0 e . ( ) ­1 C ¾¾ 14 N + ­0 e ®7 1 14 6 · In beta decay, a neutron is transformed into a proton and an electron. The proton remains in the nucleus, while the electron is emitted as a beta particle. 1 0 n ¾ ¾ 1 p + ­0 e ® 1 1 · Loss of beta particle from then nucleus results in no change in the mass number (A) and increase of 1 in the atomic number (Z). Examples: 1. 238 U undergoes alpha decay. Write the equation for the process. 92 U ¾ ¾ ?? X + 4 He ® ? ? 2 238 92 2. Write the equation for the a­decay o f radium isotope 226 Ra . 88 226 88 Ra ¾ ¾ ?? X + 4 He ® ?? 2 3 Chemistry 52 Chapter 18 GAMMA & POSITRON DECAYS · Gamma decay occurs when a nucleus gives off g­rays , and beco mes a less energetic form of the same nucleus. 204 82 Pb* ¾ ¾ 204 Pb + g ® 82 · Loss of gamma fro m the nucleus results in n...
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This document was uploaded on 03/18/2014 for the course CHEM 52 at Los Angeles Mission College.

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