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Date: 9-2-2018
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Date: 23-2-2018
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Date: 23-2-2018
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The bonding in the simple compounds of the transition elements ranges from ionic to covalent. In their lower oxidation states, the transition elements form ionic compounds; in their higher oxidation states, they form covalent compounds or polyatomic ions. The variation in oxidation states exhibited by the transition elements gives these compounds a metal-based, oxidation-reduction chemistry. The chemistry of several classes of compounds containing elements of the transition series follows.
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ما أبرز التغيرات التي تحدث عند الرجال عندما يصبحون آباءً؟
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حقائق مثيرة للاهتمام حول الأرض
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قسم الشؤون الفكرية يصدر العدد 53 من مجلة عطاء الشباب
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