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प्रश्न
Give the formula and describe the structure of a noble gas species which is isostructural with:
`BrO_3^(-)`
उत्तर १
XeO3 is isostructural to `BrO_3^(-)` and has a pyramidal molecular structure.
उत्तर २
In Br03– ion the central Br atom has 8 valence electrons (7 +1). Out of these, it shares 4 with two atoms of O forming Br = O bonds. Out of the remaining four .electrons, 2 are donated to the third O atom which accounts for its negative charge. The remaining 2 electrons constitute one lone pair. In order to minimise the force of repulsion, the structure of Br03– ion must be pyramidal. Br03– ion has (7 + 3 x 6 + 1) = 26 valence electrons and is isoelectronic as well as iso-structural with noble gas species Xe03 which has also 26(8 + 3 x 6) electrons.
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संबंधित प्रश्न
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