Question

Identify the correct statements from the following:
A) Among alkali metal ions, Li⁺ has the highest hydration enthalpy.
B) Boiling point of alkali metals increases from Li to Cs.
C) Density of K is less than that of Na and Rb.
D) Li has strong tendency to form superoxide.

• A. A & B
• B. B & C
• C. A & C
• D. A & D

Hint:

When studying alkali metals, remember that hydration enthalpy and ionization energy influence trends like boiling point and reactivity.

Answer 1

The Correct Option is C

- A) Li⁺ has the highest hydration enthalpy due to its small ionic size.
- B) Boiling point increases from Li to Cs due to the size and ionization energy of alkali metals.
- C) The density of K is less than Na and Rb.
- D) Li does not have a strong tendency to form superoxide, unlike other alkali metals. Thus, the correct answer is A & C.