AP EAMCET · Chemistry · s Block Elements
Which of the following statements are correct for alkali metal compounds?
(i) Superoxides are paramagnetic in nature.
(ii) The basic strengths of hydroxides increases down the group.
(iii) The conductivity of chlorides in their aqueous solutions decreases down the group.
(iv) The basic nature of carbonates in aqueous solutions is due to cationic hydrolysis.
- A (i), (ii) and (iii) only
- B (i) and (ii) only
- C (ii), (iii) and (iv) only
- D (iii) and (iv) only
Answer & Solution
Correct Answer
(B) (i) and (ii) only
Step-by-step Solution
Detailed explanation
(i) The alkali metal superoxides contain \(\mathrm{O}_2^{-}\) ion, which has an unpaired electron, hence they are paramagnetic in nature. (ii) The basic character of alkali metal hydroxides increases on moving down the group. (iii) The conductivity of alkali metal chlorides in…
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