## Question

###### Consider the ionic bonds between $mathrm{Na}^{+}$ ions and $underline{mathrm{Cl}}^{-}$ ions in $mathrm{NaCl}(mathrm{s}) .$ Why must energy be added to break these bonds (in other words, what is the added energy used for)?

Consider the ionic bonds between $mathrm{Na}^{+}$ ions and $underline{mathrm{Cl}}^{-}$ ions in $mathrm{NaCl}(mathrm{s}) .$ Why must energy be added to break these bonds (in other words, what is the added energy used for)?

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