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Phase Change

Metal cation ...

Question

Metal cation ionic solids dissolve in solution exothermically.This is best explained by which of the following?

A

The hydrogen bonding in the water break apart, releasing large amounts of energy that are used to force a breaking of the ionic structure.

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B

The free floating electrons in the metal cations provide a large measure of electricity when the ionic solid is broken down in the water.

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C

The breaking of the ionic structure, which releases bond energy causing the solution to be exothermic.

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D

The attraction of the cations and anions to the dipoles in water, resulting in a release of energy.

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Solution

The correct option is B The free floating electrons in the metal cations provide a large measure of electricity when the ionic solid is broken down in the water.
Metal cationic solids dissolve in solution exothermally due the free floating of electrons in the metal cations provide a large measure of electricity when the ionic solid is broken done in the water.

Hence option B is correct.

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N a^{+} A^{-}

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Q. Chemical compounds in which anions and cations are held together by electrostatic force of attraction are known as ionic compounds. Cations and anions are charged species which are formed by losing and gaining electron(s) respectively to attain the nearest noble gas configuration or stability. Usually metals lose their valence electrons to form cations while non-metals accept electrons and form anions. Being held by a strong electrostatic force of attraction between ions, ionic compounds have high melting and boiling points.

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Q. Chemical compounds in which anions and cations are held together by electrostatic force of attraction are known as ionic compounds. Cations and anions are charged species which are formed by losing and gaining electron(s) respectively to attain the nearest noble gas configuration or stability. Usually metals lose their valence electrons to form cations while non-metals accept electrons and form anions. Being held by a strong electrostatic force of attraction between ions, ionic compounds have high melting and boiling points.

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