Which of the following are not correctly matched?
(1) basic strength of oxides; Cs2O(less than)Rb2O (less than) K2O (less than) Na2O (less than) Li2O
(2) stability of bicarbonate;
LiHCO3 (less than) NaHCO3 (less than) KHCO3 (less than) RbHCO3
(3)Stability of peroxide; Na2O2 (less than) K2O2 (less than) Rb2O2 (less than) Cs2O2
(4)melting point; NaF (less than) NaCl (less than) NaBr (less than) NaI
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I guess it is 2nd option
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