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Question
How do you account for the strong reducing power of lithium in aqueous solution?
Solution
Lithium has the highest negative reduction potential value. Due to the small size of lithium it has the highest ionization enthalpy. Due to this, the reducing power of lithium is highest in an aqueous solution.
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Comment on the following observation:
Lithium is the only alkali metal to form a nitride directly.
Lithium resembles magnesium in some of its properties. Mention two such properties and give reasons for this resemblance.
All compounds of alkali metals are easily soluble in water but lithium compounds are more soluble in organic solvents. Explain.
Assertion (A): The carbonate of lithium decomposes easily on heating to form lithium oxide and CO2.
Reason (R): Lithium being very small in size polarises large carbonate ion leading to the formation of more stable Li2O and CO2.
