# Want to seperate them

Chemistry Level pending

Songei
First ionization energy of $$Na$$ is $$494 kJ•mol^{-1}$$ and electron affinity of $$Cl$$ is $$349 kJ•mol^{-1}$$.

$$642 kJ$$ is released when 1 mol of gaseous $$Na$$ atom react with 1 mol of gaseous $$Cl$$ atom to form 1 mol of $$NaCl$$ solid.

Calculate the lattice energy ($$KJ$$) of $$NaCl$$.

Gene
First ionization energy of $$\text{Na}$$ is $$494 \text{ kJ} \cdot \text{mol}^{-1}$$ and electron affinity of $$\text{Cl}$$ is $$349 \text{ kJ} \cdot \text{mol}^{-1}$$. And $$642 \text{ kJ}$$ is released when $$1 \text{ mol}$$ of gaseous $$\text{Na}$$ atom react with $$1 \text{ mol}$$ of gaseous $$\text{Cl}$$ atom to form $$1 \text{ mol}$$ of $$\text{NaCl}$$ solid.
Calculate the lattice energy (in $$\text{kJ}$$) of $$\text{NaCl}$$.

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