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a
KO
b
KO2
c
K2O
d
K2O2
answer is A.
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Detailed Solution
"K" on strong heating with oxygen gives only 3-types of oxides, with formula M2O , M2O2 , & MO21) Normal oxide K2O2) Peroxide K2O23) Super oxide KO2But can't form oxide with formula MO[KO]