Question

Which of the following statements is not true about alkali metals ?

• A. All alkali metals form oxo salts such as carbonates, sulphates and nitrates
• B. The basic character of oxides increases down the group
• C. Carbonates and sulphates of lithium are stable and their stability decreases down the group
• D. Solubility of carbonates and sulphates increases down the group

Answer 1

Answer: (C)

Carbonates and sulphates of lithium are stable and their stability decreases down the group

Answer 2

Carbonates and sulphates of lithium decompose on heating while the stability of carbonates and sulphates of other metals increases down the group.