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Which one of the following orders presen...

Which one of the following orders presents the correct sequence of the increasing basic nature of the given oxides?

A

`Al_(2)O_(3) ltMgOltNa_(2)OltK_(2)O`

B

`MgOltK_(2)O ltAl_(2)O_(3)ltNa_(2)O`

C

`Na_(2)O ltK_(2)OltMgOltAl_(2)O_(3)`

D

`K_(2)OltNa_(2)OltAl_(2)O_(3)ltMgO`

Text Solution

Verified by Experts

The correct Answer is:
A
As metallic character of element attached to oxygen atom increases, the difference between the electronegativity values values of element and oxygen increaes and thus basic character or oxidised increases and vice-versa. Hence the increaseing correct order of basic nature is
`Al_(2)O_(3)ltMgOltNa_(2)OltK_(2)O`.
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