هنا استفسارات كيمياء 110 للتحضيري

[haay]

المشاركة الأصلية كتبت بواسطة sabyona بنات ممكن طريقة حل هادا السؤال : 3. Which of these covalent bonds is the most polar (i.e., highest percent ionic character)? أ \ AlــــــــــI ب \ SiــــــــــI ج \ AlــــــــــCl د \ SiــــــــــCl هـ\ SiــــــــــP

شووفي فكرة السؤال هذا طاالب اكثر قطبية اي عندها صفة الايوونية كبيرة وكيف نطلعها بإننا نطلع القرق اي الطرح بين كل ذرة وذردة من فين تجبي السالبية من الجدول في الكتااب

has the largest difference in electronegativity; which also means that it has the highest ionic characte


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شووفي هذا السؤال
Which of the following has highest ionic character and why?
MgCl2, CaCl2, BaCl2, BeCl2



Ionic character is a a measure of the polarity of the bond. It is calculated by subtracting the electronegativity of the more electronegative element from the lesser electronegative element. All of the molecules have the same anion (chloride) and chloride is the more electronegative of all the molecular pairs. If you want the largest difference in electronegativity you want to choose a cation with the smallest electronegativity. The cation with the smallest electronegativity is Barium, so BaCl2 has the largest difference in electronegativity; which also means that it has the highest ionic character.