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Cesium atoms are the largest neturally o...

Cesium atoms are the largest neturally occurring atoms. The radius of `Cs` atom is `2.6 Å`. The number of moles of `Cs` atoms to be laid side by side to give a row of `Cs` atoms `2.5 cm` long is `x xx 10^(-17)`. Find the value of `x`.

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The correct Answer is:
8
Diameter of X atoms `=8xx(1)/(8)=1`/unit cell
Number of Y atom=1/unit cel
Formula of O atoms `=12xx(1)/(4)=3` /unit cell
Formula is : `XYO_(3)rArr X_(a)Y_(b)O_(c)`.
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