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Modern Periodic Table — Chemistry STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryModern Periodic Table3 Marks
Question
Consider the oxides $Li_2O, CO_2, B_2O_3.$
a. Which oxide would you expect to be the most basic?
b. Which oxide would be the most acidic?
c. Give the formula of an amphoteric oxide.
✓

Answer

a. $Li _2 O$ is the most basic oxide.
b. $CO _2$ is the most acidic oxide.
c. Formula of an amphoteric oxide: $Al _2 O _3$.
[Note: Both $B _2 O _3$ and $CO _2$ are acidic oxides. But $CO _2$ is more acidic oxide as compared to $B _2 O _3$. Hence, $CO _2$ is most acidic oxide amongst the given.]

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