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Characteristics of s- Block Elements

Which of the ...

Question

Which of the following alkali metal halides has the lowest lattice energy?

A

L i F

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B

N a C l

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C

K B r

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D

C s I

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Solution

The correct option is D $C s I$
Lattice energy decreases as the size of ions increases. Compared to other compounds, the size of cation and anion is highest in cesium iodide. Hence the lattice energy is lowest for cesium iodide.

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Q. Which of the following sodium halides has the lowest lattice energy?

Q. The solubility of metal halides depends on their nature, lattice enthalpy and hydration enthalpy of the individual ions. Amongst fluorides of alkali metals, the lowest solubility of

L i F

in water is due to:

Q. Which set of compounds in the following pair of ionic compounds has the higher lattice energy?

K C l

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L i B r

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Q. The solubility of metal halides depends on their nature, lattice enthalpy and hydration enthalpy of the individual ions.
Amongst fluorides of alkali metals, the lowest solubility of

L i F

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L i F

C s I

in water are respectively due to which of the following properties of the alkali metal ions?

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Characteristics of s- Block Elements

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