Вопрос школьника по предмету Химия
Представлена внешняя структура атомов элемента. Назвать этот элемент и определить его место в периодической системе.
а) …3d0 4s1
Ответ учителя по предмету Химия
Калий (K)
В ПСХЭ расположен в 4 периоде, 1 группе главной подгруппы
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