How many compounds given below are amphoteric | vedclass

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(A) The oxides of the type $\stackrel{+3}{E_2}O_3$ of $N$ and $P$ ($P_4O_6$,dimer of $P_2O_3$) are purely acidic.$As_4O_6$ (dimer of $As_2O_3$) and $S

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$2$

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(A) The oxides of the type $\stackrel{+3}{E_2}O_3$ of $N$ and $P$ ($P_4O_6$,dimer of $P_2O_3$) are purely acidic.$As_4O_6$ (dimer of $As_2O_3$) and $Sb_4O_6$ (dimer of $Sb_2O_3$) are amphoteric.$Bi_2O_3$ is predominantly basic.The oxides of the type $\stackrel{+5}{E_2}O_5$ $(P_2O_5, As_2O_5, Sb_2O_5)$ are acidic.Therefore,among the given oxides,only $As_4O_6$ and $Sb_4O_6$ are amphoteric. The total count is $2$.

How many compounds given below are amphoteric oxides?
$P_2O_5, P_4O_6, As_2O_5, As_4O_6, Sb_2O_5, Sb_4O_6, Bi_2O_3$

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How many compounds given below are amphoteric oxides?$P_2O_5, P_4O_6, As_2O_5, As_4O_6, Sb_2O_5, Sb_4O_6, Bi_2O_3$