In NaCl crystal, the radius ratio is:

0.4

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0.98

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1.0

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0.52

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Solution

The correct option is C $0.52$
Limiting radius
ratio $= r / R$ Coordination
Number of cation Structural
Arrangement
(Geometry of voids) Example
$0.155 - 0.225$ $3$ Plane Trigonal Boron Oxide
$0.225 - 0.414$ $4$ Tetrahedral $Z n S, S i O_{2}$
$0.414 - 0.732$ $4$ Square planar $-$
$0.414 - 0.732$ $6$ Octahedral $N a C l, M g O_{2}$
$0.732 - 1.000$ $8$ Cubic $C s C l$

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Similar questions

(\frac{r_{c}}{r_{a}})

0.52

(\frac{r_{c}}{r_{a}})

KCl crystallizes in the same type of lattice as does NaCl.Given that radius ratio of Na by Cl is 0.5 and radius of Na by K is 0.7.

Calculate the ratios of the sides of unit cell for KCl to that for NaCl and the ratio of densities of NaCl to that for KCl.

1.0

N a^{+}

C l^{-}

N a^{+}

C l^{-}

0.4

0.7

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Limiting radius ratio $= r / R$	Coordination Number of cation	Structural Arrangement (Geometry of voids)	Example
$0.155 - 0.225$	$3$	Plane Trigonal	Boron Oxide
$0.225 - 0.414$	$4$	Tetrahedral	$Z n S, S i O_{2}$
$0.414 - 0.732$	$4$	Square planar	$-$
$0.414 - 0.732$	$6$	Octahedral	$N a C l, M g O_{2}$
$0.732 - 1.000$	$8$	Cubic	$C s C l$