التراكيب الإلكترونية وحالات التأكسد ومن يُعدّ عنصرًا انتقاليًّا

Week 2 · Chapter 1 (B): electron configurations of the first series with the chromium and copper exceptions, oxidation states (why iron(II) oxidises easily and manganese(II) does not), the definition of a transition element, coinage metals in and zinc, cadmium and mercury out · 3 lessons