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Date: 2-2-2018
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Date: 31-12-2015
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Date: 5-5-2019
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Cesium Fluoride, CsF - mp/bp 703/1231 °C, (8,8) coordination.
With five shells of electrons shielding its nucleus, the Cs+ ion with its low charge density resembles a big puff-ball which can be distorted by the highly polarizing fluoride ion. The resulting ion-induced dipoles (blue arrows) account for much of the lattice energy here.
The reverse of this would be a tiny metal ion trying to hold onto four relatively huge iodide ions like Lithium iodide.
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دراسة تحدد أفضل 4 وجبات صحية.. وأخطرها
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العتبة العباسية تستعدّ لتكريم عددٍ من الطالبات المرتديات للعباءة الزينبية في جامعات كركوك
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