Предмет: Химия, автор: toodigformyex

Запишіть назву елемента, період, групу (вказати головна чи побічна), нуклонне (масове) число, кількість протонів, нейтронів, електронів для: Р, Cu, Al, Br.

Ответы

Автор ответа: neon3902

1

Ответ:

рано вроде а³ p cu⁶ a⁹ be ⁸

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