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Date: 25-7-2020
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Date: 7-2-2018
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Date: 25-6-2020
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A complex ion has a metal ion at its center with a number of other molecules or ions surrounding it. These can be considered to be attached to the central ion by coordinate (dative covalent) bonds (in some cases, the bonding is actually more complicated). The molecules or ions surrounding the central metal ion are called ligands. Simple ligands include water, ammonia and chloride ions.
What all these have got in common is active lone pairs of electrons in the outer energy level. These are used to form co-ordinate bonds with the metal ion.
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دواء جديد يعطي الأمل لمرضى الانزلاق الغضروفي
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آلة زمن للمستقبل.."ميتا" تكشف عن نموذج لنظارات الواقع المعزز
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العلاقات العامّة والمجمع العلمي يقيمان محفلًا للمدارس القرآنية من محافظتي النجف والمثنى
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