Question

Both lithium and magnesium display several similar properties due to the diagonal relationship. However, the one which is incorrect is:

• A. Both form soluble bicarbonates
• B. Both from nitrides
• C. Nitrates of both Li and Mg yield $N{O}_2$ and $O_2$ on heating
• D. Both form basic carbonates

Answer 1

The correct option is D Both form basic carbonates

Common properties of lithium and magnesium are:

• Similar size
• Atomic radii
• Harder and lighter than other elements
• Oxides and hydroxides are insoluble in water and soluble in ethanol
• They form nitrides,
• They do not combine with excess oxygen to form superoxides
• Nitrates of both yield $N{O}_2$ and $O_2$ on heating
• Their carbonates decompose easily
• They are deliquescent
• They form soluble bicarbonates
• Both can form carbonates but lithium carbonate is not basic in nature.