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Metal Excess Defect

The alkali me...

Question

The alkali metal which forms hydrate of chloride salt is:

A

L i

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B

N a

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C

R b

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D

C s

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Solution

The correct option is A $L i$
Amongst alkali metals, chloride salts of lithium are hydrated. Other alkali metals form anhydrous chloride. This is because lithium ion has smallest size due to which it has the strongest polarizing power among alkali metal ions. This tendency decreases down the group .

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Similar questions

Q. Consider the following statements :
(I)

C s^{+}

ion is more highly hydrated than other alkali metal ions.
(II) Among the alkali metals

L i, N a, K,

R b, L i

has the higher melting point.
(III) Among the alkali metals, only

L i

forms a stable nitride by direct combination.

Q. Consider the following statements:
1.

C s^{+}

is more highly hydrated than the other alkali metal ions.
2. Among the alkali metals

L i, N a, K

R b

, lithium has the highest melting point.
3. Among the alkali metals only lithium forms a stable nitride by direct combination.
Out of these statements:

Q. The mobilities of the alkali metal ions in aqueous solution are

L i^{+} < N a^{+} < K^{+} < R b^{+} < C s^{+}

Q. The solubility of alkali metal salts in water is due to the fact that the cations get hydrated by water molecules. The degree of hydration depends upon the size of the cation. If the trend of relative ionic radii is

C s^{+} > R b^{+} > K^{+} > N a^{+} > L i^{+}

.
What is the relative degree of hydration?

The correct order of reactivity of alkalimetals towards $H_{2}$ is

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