Chapter 19 Nuclear Chemistry. Properties of the Nucleus Chemist’s View: Seat of positive charge and mass in atoms and molecules Not very important to chemical reactivity; valence electrons are key Nuclear Characteristics Very small size: about 1 x 10 -13 cm (Whole atom = 1 x 10 -8 cm)
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2, 8, 20, 28, 50, 82, 126 very stable
Calcium-40 is“Doubly Magic”
b) 3.5 x 10-11 J/nuclide = 2.1 x 1013 J/mol of energy is given off by loss of mass
Pu-239 is toxic and flames in air, so U.S. doesn’t use, France does