(i) Supcroxides are paramagnetic in nature.
(ii) The basic strengths of hydroxide increases down the group.
(iii) The conductivity of chlorides in their aqueous decreases down the group.
(iv) The basic nature of carbonates in aqueous solution is due to cationic hydrolysis.
(1) (i),(ii) and (iii) only
(2) (i) and (ii) only
(3) (ii),(iii) and (iv) only
(4) (iii) and (iv) only