(B) The radius ratio is calculated as follows: $\frac{r_{Rb^{+}}}{r_{I^{-}}} = \frac{1.46}{2.16} = 0.676$ Since the radius ratio lies between $0.414$

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(B) The radius ratio is calculated as follows: $\frac{r_{Rb^{+}}}{r_{I^{-}}} = \frac{1.46}{2.16} = 0.676$ Since the radius ratio lies between $0.414$ and $0.732$,the coordination number is $6$. Therefore,the geometry of $RbI$ is similar to the rock salt $(NaCl)$ structure.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Atomic and Ionic radii

Medium

The ionic radius of $Rb^{+}$ and $I^{-}$ respectively is $1.46 \ \mathring{A}$ and $2.16 \ \mathring{A}$. The geometry of $RbI$ would be similar to

A
$CsCl$
B
$NaCl$
C
$ZnS$
D
Boron-oxide

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Classification of Elements and Periodicity in Properties

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Atomic and Ionic radii

Which of the following is arranged in order of increasing radius?

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The radius of isoelectronic species:

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Which statement is correct regarding the atomic and ionic radii of potassium $(K)$ and bromine $(Br)$?

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Identify the increasing order of the covalent radii of the given elements: $(I) Ti, (II) Ca, (III) Sc$.

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Which of the following sets of ions represents a group of isoelectronic species?

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The ionic radius of $Rb^{+}$ and $I^{-}$ respectively is $1.46 \ \mathring{A}$ and $2.16 \ \mathring{A}$. The geometry of $RbI$ would be similar to

Similar Questions

Which of the following is arranged in order of increasing radius?

The radius of isoelectronic species:

Which statement is correct regarding the atomic and ionic radii of potassium $(K)$ and bromine $(Br)$?

Identify the increasing order of the covalent radii of the given elements: $(I) Ti, (II) Ca, (III) Sc$.

Which of the following sets of ions represents a group of isoelectronic species?

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