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Date: 12-2-2018
1049
Date: 9-1-2017
1055
Date: 29-6-2020
802
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In this example, CO32-, the Lewis diagram shows carbon at the center with no lone electron pairs.
The Lewis diagram is as follows:
C = 4 e-
O = 6e- x 3 = 18e-
2- charge = 2e-
Total electrons = 24
One double bond is needed to give carbon an octet. The carbon and oxygen are bonded through a double bond which counts as "one electron pair" and two single bonded oxygens. Hence the molecule has three electron pairs and is trigonal planar geometry. Carbonate ion is present in limestone as calcium carbonate. A form of it, bicarbonate, is in baking soda and baking powder.
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دراسة: عدم ترتيب الغرفة قد يدل على مشاكل نفسية
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علماء: تغير المناخ تسبب في ارتفاع الحرارة خلال موسم الحج
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جهود مكثفة وطباعة عشرات الآلاف من المنشورات .. استعدادات العتبة العلوية المقدسة لعيد الغدير الأغر
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