Предмет: Химия, автор: Маша4222

Вкажіть електронну формулу елемента ||групи |||періоду

Ответы

Автор ответа: Alchemist1798

Элемент 2 группы, 3 периода - это Магний. Его электронная формула ровняется = 1s^2 2s^2p^6 3s^2
^ - степень, а в нашем случаи кол-во электронов на орбитали

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1. Аллотропия – это ….(определение)
2. Аллотропные модификации кислорода это ….. и ….. (написать названия и формулы)
3. Аллотропные модификации серы это - ……, ….., …..
4. Низшая степень окисления серы …….. и она выступает в роли ………. И