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- Which of the following is the correct sequence for the basic nature of oxides?Option: 1 MgO < K2O < Al2O3<
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Which of the following is the correct sequence for the basic nature of oxides?
MgO < K2O < Al2O3 < Na2O
Na2O < K2O < MgO <Al2O3
Al2O3 < MgO < Na2O < K2O
K2O < Na2O < Al2O3 < MgO
Answers (1)
Chemical Properties of Elements -
Nature of Oxides
When the oxygen atom combines with any other atom and forms a compound, then it is known as as oxide. In moving from left to right in a period, the nature of oxide changes from basic to acidic while in moving down the group, the basic nature of oxides increases and acidic nature decreases. The oxides of metals are basic in nature, oxides of non-metals are acidic in nature and oxides of metalloids are amphoteric in nature.
|
Na2O |
MgO |
Al2O3 |
SiO2 |
P2O5 |
SO3 |
Cl2O7 |
|
Strongly basic |
Basic |
Amphoteric |
Weakly acidic |
Acidic |
Strongly acidic |
Strongly acidic |
-
The basic nature of oxides decreases in moving from left to right whereas it increases in moving down the group. Thus the correct sequence is:
Al2O3 < MgO < Na2O < K2O
Therefore, Option(3) is correct
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