Question

In NABR crystal each ion is octahedrally surrounded by ions of opposite charge

Answer 1

Yes, in NaBr crystal, each ion is octahedrally surrounded by ions of opposite charge. The positive $Na^+$ ions and the negative $Br^-$ ions in the crystal are in fcc crystal lattice. The $Na^+$ occupy the octahedral positions in the $Br^-$ sub-lattice and the $Br^-$ occupy the octahedral positions in $Na^+$ sub-lattice.

Answer 2

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Yes, in NaBr crystal, each ion is octahedrally surrounded by ions of opposite charge. The positive $Na^+$ ions and the negative $Br^-$ ions in the crystal are in fcc crystal lattice. The $Na^+$ occupy the octahedral positions in the $Br^-$ sub-lattice and the $Br^-$ occupy the octahedral positions in $Na^+$ sub-lattice.

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