Предмет: Химия, автор: Woserd

Выбери верные утверждения:
1. число электронов в атоме равно порядковому номеру элемента
2. масса протона равна массе электрона
3. нуклид — вид атомов с определённым зарядом ядра и массой
4. число нейтронов в атоме равно порядковому номеру элемента

Ответы

Автор ответа: NOVOp9

Ответ:

Правильный ответ это 2 и 1

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