Предмет: Химия, автор: настя210700

что такое амфотерность что такое амфотерность? какие вы знаете амфотерные элементы?

Ответы

Автор ответа: karebo21

В периодической системе элементов амфотерные элементы занимаютсредние места в периодах по диагонали из верхнего левого угла к нижнему правому углу. Типичные элементы, образующие амфотерные соединениябериллий, алюминий, хром, цинк, германий, мышьяк, олово, сурьма, свинец и др. У этих элементов не достроены р-атомные орбитали (табл. 5). Исключение составляет лишь хром, у которого во внешнем слое находятся 3d 4s -электроны хром — переходный металл с хорошо выраженной способностью к комплексообразованию.

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2 What does the writer reveal about his feelings
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