CHE 106 Lecture Notes - Lecture 26: Covalent Bond, Lattice Energy, Ionic Compound
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CHE 106 Full Course Notes
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The energy required to completely separate a mole of a solid ionic compound into its gaseous ions. The e(cid:374)ergy asso(cid:272)iated (cid:449)ith ele(cid:272)trostati(cid:272) i(cid:374)tera(cid:272)tio(cid:374)s is go(cid:448)er(cid:374)ed (cid:271)y coulo(cid:373)(cid:271)"s la(cid:449): It increases with the charge on the ions. K is a constant, 8. 99 x 10^9 j x m/c^2. The transfer of an electron from a sodium atom to a chlorie atom is not in itself energetically favorable; it requires 146 kj/mol of energy. However, 788 kj of energy is released when these oppositely charged ions come together and solidify. Which of the following will have the largest lattice energy: zns. The lattice energy is the heat of formation from 1 mol of its ionic constitutents in the gas phase. The heat of formation of a crystal can be measured relative to the elements in their standard state. As form cations/ establish a noble gas configuration, the electons are lost form the valence shell first.
