Identify the incorrect statement about the gr | vedclass

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(B) $1$. Borax $(Na_2B_4O_7 \cdot 10H_2O)$ in water hydrolyzes to give $NaOH$ and $H_3BO_3$. Since $NaOH$ is a strong base and $H_3BO_3$ is a weak aci

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Orthoboric acid is a weak tribasic acid.

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(B) $1$. Borax $(Na_2B_4O_7 \cdot 10H_2O)$ in water hydrolyzes to give $NaOH$ and $H_3BO_3$. Since $NaOH$ is a strong base and $H_3BO_3$ is a weak acid,the solution is alkaline. This statement is correct.$2$. Orthoboric acid $(H_3BO_3)$ is a weak monobasic Lewis acid. It acts as an acid by accepting a hydroxyl ion $(OH^-)$ from water,not by donating protons. Therefore,calling it a tribasic acid is incorrect.$3$. Metaboric acid $(HBO_2)$ on heating gives boron trioxide $(B_2O_3)$,which is an acidic oxide. This statement is correct.$4$. $LiBH_4$ is a well-known reducing agent used in organic synthesis. This statement is correct.Thus,the incorrect statement is $B$.

Identify the incorrect statement about the group $13$ elements.

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