Q.

An ionic compound is expected to have an octahedral structure if rc/ra lies in the range of

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a

0.414 to 0.732

b

0.225 to 0.414

c

0.732 to 0.82

d

0.155 to 0.225

answer is A.

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Detailed Solution

An ionic compound is expected to have an octahedral structure if rc/ra lies in the range of 0.414 to 0.732

Octahedral molecular geometry, also known as square bipyramidal, describes compounds that have six atoms, groups of atoms, or ligands symmetrically arranged around a centre atom, creating the vertices of an octahedron.

The ratio is found  as

 0.414 >rcra>0.732

Hence option A is correct

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An ionic compound is expected to have an octahedral structure if rc/ra lies in the range of