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The ionic radii of Rb^(+) and Br^(-) ion...

The ionic radii of `Rb^(+)` and `Br^(-)` ions are 147 pm and and 195 pm resectively. Deduce the possible C.N of `Rb^(+)` ions in RbBr

Text Solution

Verified by Experts

The correct Answer is:
8
Radius ratio `(r^(+)//r^(-))=(("147pm"))/(("195pm"))=0.753`
`therefore` The possible C.N. of `Rb^(+)` ion in RbBr = 8.
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  • The radii of Na^(+) and Cl^(-) ions are 95 pm and 181 pm respectively. The edge length of NaCl unit cell is

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