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Hydration Enthalpy and Lattice Enthalpy (Group 2)

Alkaline eart...

Question

Alkaline earth metal compounds are less soluble in water than corresponding alkali metal compounds because the former have

A

Low lattice energies

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B

Higher ionization energies

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C

Higher covalent character

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D

Higher ionic character

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Solution

The correct option is C
Higher covalent character

Metal ion have +2 charge and more covalent character

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Similar questions

Q. Assertion :Alkaline earth metal salts are less soluble in water than the corresponding alkali metal salts. Reason: Alkaline earth metal cations possess high lattice energy due to their smaller size and higher charge.

Q. Solubility of an ionic compound in water is mainly dependent on:
a. Lattice enthalpy
b. Hydration enthalpy
Both these factors oppose each other, and the resultant of these factors determines the solubility of an ionic compound in water. If the lattice enthalpy has a larger value, the compound is less soluble. If the hydration enthalpy has larger value, the compound is highly soluble in water.

Compounds of alkaline earth metals are less soluble than alkali metals, due to:

Q. Solubility of an ionic compound in water is mainly dependent on:
a. Lattice enthalpy
b. Hydration enthalpy
Both these factors oppose each other, and the resultant of these factors determines the solubility of an ionic compound in water. If the lattice enthalpy has a larger value, the compound is less soluble. If the hydration enthalpy has larger value, the compound is highly soluble in water.

B e F_{2}

is soluble in water while fluorides of other alkaline earth metals are insoluble because of:

B e F_{2}

is soluble in water whereas, the fluorides of other alkaline earth metals are insoluble. This is because of the:

Q. Assertion :Alkaline earth metals have lower densities than alkali metals. Reason: Atomic radii of alkaline earth metals are larger than that of corresponding alkali metals.

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