🤓 Based on our data, we think this question is relevant for Professor Huskey's class at NEWARK.

$\overline{){\mathbf{Lattice}}{\mathbf{}}{\mathbf{Energy}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}\frac{|\mathrm{cation}\mathrm{charge}\times \mathrm{anion}\mathrm{charge}|}{\mathbf{cation}\mathbf{}\mathbf{radius}\mathbf{}\mathbf{+}\mathbf{}\mathbf{anion}\mathbf{}\mathbf{radius}}}$

K_{2}S

$\mathbf{Lattice}\mathbf{}\mathbf{energy}\mathbf{}\mathbf{=}\mathbf{}\frac{|\left(+1\right)\times \left(-2\right)|}{\mathbf{4}\mathbf{+}\mathbf{3}}$

**Lattice energy = 0.2857**

K_{2}O

$\mathbf{Lattice}\mathbf{}\mathbf{energy}\mathbf{}\mathbf{=}\mathbf{}\frac{|\left(+1\right)\times \left(-2\right)|}{\mathbf{4}\mathbf{+}\mathbf{2}}$

**Lattice energy = 0.3333**

CaS

$\mathbf{Lattice}\mathbf{}\mathbf{energy}\mathbf{}\mathbf{=}\mathbf{}\frac{|\left(+2\right)\times \left(-2\right)|}{\mathbf{4}\mathbf{+}\mathbf{3}}$

**Lattice energy = 0.5714**

Which of the following compounds requires the most energy to convert one mole of the solid into separate ions?

(a) K_{2}S

(b) K_{2}O

(c) CaS

(d) Cs_{2}S

(e) CaO

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lattice Energy concept. You can view video lessons to learn Lattice Energy. Or if you need more Lattice Energy practice, you can also practice Lattice Energy practice problems.

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Based on our data, we think this problem is relevant for Professor Huskey's class at NEWARK.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.