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When struck with a sharp blow ionic compounds tend to what while metallic substances which are what change sharpe?
Wiki User
∙ 11y ago
Ionic compounds tend to shatter when struck with a hammer. This is due to the crystal structure formed by an ionic compound, which is basically repeating units of negatively and positively charged ions in some sort of geometric arrangement. When struck, ions of similar charge and pushed next to each other. These ions repel and the whole crystal will then cleave apart along the crystal pattern.
example: Left undisturbed NaCl crystal, right struck Na Cl :crys.tal breaks along crystal pattern
Na Cl Na Cl Na Cl
Cl Na Cl Na Cl Na Na Cl
Na Cl Na Cl Na Cl Cl Na
Cl Na Cl Na Cl Na Na Cl
Na Cl Cl Na
Metallic bonds are better pictured as an electron sea, where all the metal atoms that are participating are freely sharing electrons amongst each other. Because of this there are no localized charges to repel each other, making metallic bonds far less susceptible to shattering.
Wiki User
∙ 11y ago
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