1.

Among `Al_(2)O,SiO_(2),P_(2)O_(3)` and `So_(2)` the correct order of acid strength isA. `SiO_(2) lt SO_(2) lt A1_(2)O_(3) lt P_(2)O_(3)`B. `A1_(2)O_(3) lt SiO_(2) lt SO_(2) lt P_(2)O_(3)`C. `SO_(2) lt P_(2)O_(3) lt SiO_(2) lt A1O_(3)`D. `A1_(2)O_(3) lt SiO_(2) lt P_(2)O_(3) lt SO_(2)`

Answer» Correct Answer - D
Acidic strength increases with the increase of nonmetallic character which increases as we move across the period. Thus, the correct order is
`A1_(2)O_(3) gt SiO_(2) lt P_(2)O_(3) lt SO_(2)`


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