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Standard XII

Chemistry

Coordination Number

The ionic rad...

Question

The ionic radii of $A^{+}$ and $B^{-}$ are $1.7 ˚ A$ and $1.8 ˚ A$ respectively. Find the coordination number of $A^{+}$ :

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Solution

Now in above question
$R a d i u s r a t i o = [\frac{r_{s m a l l}}{r_{l a r g e}}]$
$R a d i u s r a t i o = [\frac{1.7}{1.8}]$
ratio is 0.944
so from the given value we get ratio is $> .73$
hence cubic lattice
Coordination number is 8

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The ionic radii of A+ and B− are 1.7 ˚A and 1.8 ˚A respectively. Find the coordination number of A+:

Now in above question Radius ratio=[rsmallrlarge]Radius ratio=[1.71.8]ratio is 0.944so from the given value we get ratio is >.73hence cubic latticeCoordination number is 8

The ionic radii of $A^{+}$ and $B^{-}$ are $1.7 ˚ A$ and $1.8 ˚ A$ respectively. Find the coordination number of $A^{+}$ :

Now in above question
$R a d i u s r a t i o = [\frac{r_{s m a l l}}{r_{l a r g e}}]$
$R a d i u s r a t i o = [\frac{1.7}{1.8}]$
ratio is 0.944
so from the given value we get ratio is $> .73$
hence cubic lattice
Coordination number is 8