材料科學(xué)基礎(chǔ)(清華大學(xué))(1)(參考版)
2024-10-21 16:23本頁面
【正文】 m2) Interionic Energies nabaeZZE ???0221n e t 4 ??Attractive energy Repulsive energy Example problem If the attractive force between a pair of Mg2+and S2 is 108N and if the S2 ion has a radius of , calculate a value for the ionic radius of the Mg2+ ion in nanometers. Solution 20221a t t r a c t iv e4 aeZZF?????)](mN([4))(2)(2(4 82212219a t t r a c t iv e02210??????????? ???）??? FeZZa . 1 8 4 n 220MgMg0????????????SSrarrra?又2. Covalent bonding Materials with covalent bonding are characterized by bonds that are formed by sharing of valence electrons among two or more atoms. 3. Metallic bonding Metallic bonding occurs in solid metals. In metals in solid state, atoms are packed relatively close
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