Single Choice

HAO is the compound whose aqueous solutions is basic and order of basic strength is____.

A$$\displaystyle HCO=HAO$$
B$$\displaystyle HCO< HAO$$
C$$\displaystyle HCO> HAO$$
Correct Answer
Dnon of these

Solution

As per Gallis, in $$AOH$$

(i) if electronegativity of A is more than 1.7 (Non-metal) then it is acidic in nature.

(ii) if electronegativity of 'A' is less than 1.7 (metal) then $$AOH$$ will be basic in nature.

So $$COH$$ is basic in nature as it has very low electronegativity (1.6).

and basic strength is $$HCO > HAO$$.

Hence, the correct option is $$\text{C}$$

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