Предмет: Химия, автор: eveshkaeveshka

Определите химический элемент по известному массовому числу и числу нейтронов.
1) Массовоечисло – 3, число нейтронов– 2, химический знак элемента –
2) Массовоечисло – 3, числонейтронов – 2, химический знакэлемента –
3) Массовоечисло – 3, числонейтронов – 2, химический знакэлемент –
4) Массовоечисло – 3, числонейтронов – 2, химический знакэлемента –
варианты ответов: H O C Ca

Ответы

Автор ответа: ayrat737

Ответ:

1) H; 2) O; 3) C; 4) Ca

Объяснение:

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