1.

Which of the following is not correctly matched :-

Answer»

`Na_(2)O_(2) lt K_(2) O_(2) lt Rb_(2)O_(2) lt Cs_(2) O_(2) `(Thermal stability order)
`LiHCO_(3) lt NaHCO_(3) lt KHCO_(3) lt RbHCO_(3) lt CsHCO_(3)` (Thermal stability order)
`CH_(4) lt NH_(3) lt H_(2)O lt HF` (Thermal stability order)
`LiH lt NaH lt KH lt RbH lt CsH` (Thermal stability order)

ANSWER :C


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