Nuclear Chemistry Inorganic Chemistry May 12 2015 Atomic

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Nuclear Chemistry Inorganic Chemistry May 12, 2015

Nuclear Chemistry Inorganic Chemistry May 12, 2015

Atomic Nuclei and Nuclear Stability Describe how the strong force attracts nucleons Relate binding

Atomic Nuclei and Nuclear Stability Describe how the strong force attracts nucleons Relate binding energy and mass defect Predict the stability of a nucleus by considering factors such as nuclear size, binding energy, and the ratio of neutrons to protons in the nucleus

Nuclear forces Nucleons and nuclide

Nuclear forces Nucleons and nuclide

Nuclear forces Protons and neutrons are nucleons A specific number of protons and neutrons

Nuclear forces Protons and neutrons are nucleons A specific number of protons and neutrons are described as a nuclide An isotope has the same atomic number but different mass number Isotopic notation Mass # Atomic # 25 12 Mg. Chemical Symbol

Nuclear Forces Strong force exists when nucleons are close together The strong force must

Nuclear Forces Strong force exists when nucleons are close together The strong force must overcome the electrical charge of the protons Three quarks make up nucleons Quarks are in flavors

Nuclear Forces Binding energy and Mass Defect separate nucleons nucleus + energy Nuclear binding

Nuclear Forces Binding energy and Mass Defect separate nucleons nucleus + energy Nuclear binding energy is the energy associated with the loss of mass, mass defect, from the combining of nucleons Eo = mc 2 4 He 2. 73 x 10 12 J/mol 2

Nuclear Forces

Nuclear Forces

Nuclear Forces Stability 1. Except for 11 H and 32 He, all stable nuclei

Nuclear Forces Stability 1. Except for 11 H and 32 He, all stable nuclei have a number of neutrons that is equal to or greater than the number of protons A nucleus that has an N/Z number that is too large or too small is unstable. Gradual increase from 1 to 1. 5 Nuclei with even number of neutrons and protons are more stable Nuclei that have magic numbers of protons and neutrons [2, 8, 20, 28, 82, &126]

Review Problems 1 -12 Skip 2’s page 647 1 -9 Skip 2’s page 874

Review Problems 1 -12 Skip 2’s page 647 1 -9 Skip 2’s page 874 Mass of a proton 1. 672614 x 10 -27 kg Mass of a neutron 1. 6749543 x 10 -27 kg Speed of light 3. 00 x 108 m/s

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