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| यौगिक | प्रकृति |
|---|---|
| $i$. $PbO_2$ | $a$. अम्लीय |
| $ii$. $Sb_2O_3$ | $b$. क्षारीय |
| $iii$. $GeO_2$ | $c$. उभयधर्मी (Amphoteric) |
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