nuclear chemistry chapter 21. nuclear chemistry study of nuclear reactions and their uses in...

Download Nuclear Chemistry Chapter 21. Nuclear Chemistry Study of nuclear reactions and their uses in chemistry nuclear reactions – change in matter originating

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  • Nuclear ChemistryChapter 21

  • Nuclear Chemistry Study of nuclear reactions and their uses in chemistrynuclear reactions change in matter originating in the nucleus of an atomradioactive nuclei spontaneously changing and emitting radiation

  • Nuclear ChemistrySubatomic particles are involvedproton and neutron nucleonsCan be determined by atomic number and mass numberSame atomic number, different mass number isotopeRadioactive nuclei radionuclideAtoms with radionuclides radioisotopes

  • Nuclear ChemistryRadionuclidesUnstableEmit particles and electromagnetic radiationRadioactive decay

  • Radioactive Decay1 alpha radiation Helium - 4 particles, aka alpha particles42He23892U 23490Th + 42He

  • Alpha radiation - SampleWhat product is formed when radium-226 undergoes alpha decay?22688Ra 22286Rn + 42HeWhat element undergoes alpha decay to form lead-208?21284Po 20882Pb + 42He

  • Radioactive decay2 beta radiation High speed e-0-1e or 0-1 13153I 13154Xe + 0-1e

  • Radioactive decay3 gamma radiation High energy photons00Energy lost when nucleons reorganize

  • Radioactive decay4 positron emissionSame mass as e-, opposite charge01e116C 115B + 01ePositron can convert proton to neutron

  • Radioactive decay5 electron captureCapture of electron by nucleus from electron cloud0-1e consumed, not formed

  • Electron Capture - SampleWrite nuclear equations for the following processes:a) Mercury-201 undergoes electron captureb) Thorium-231 decays to form protactinium-231a) 20180Hg + 0-1e 20179Aub) 23190Th 23191Pa + 0-1e

  • Electron Capture-Sample 2Write a balanced nuclear equation for the reaction in which oxygen-15 undergoes positron emission158O 157N + 01e

  • Nuclear TransmutationsNuclei changed by being struck by neutron or nucleusCommonly represented by listing in order the target nucleus, the bombarding particles, the ejected particles, the product nucleus147N (,p)178O 147N + 42He 11p + 178O

  • Nuclear Transmutations-SampleWrite the balanced nuclear equation for the process summarized as 2713Al (n, ) 2411Na2713Al + 10n 42He + 2411NaUsing shorthand notation, write the nuclear reaction 168O + 11H 137N + 42He168O (p, ) 42He

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