Заряд ядра 20 у....
8 класс 15.02

Quiz
•
Chemistry
•
7th Grade
•
Easy
Юлия Дервис
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10 questions
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1.
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2 mins • 1 pt
2.
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Заряд ядра 47 у ....
3.
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Максимальная валентность фосфора
4.
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2 mins • 1 pt
Число протонов селена
5.
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1 min • 1 pt
Число электронных слоев в атоме магния
6.
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2 mins • 1 pt
Число электронных слоев в атоме углерода
7.
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1 min • 1 pt
Число электронов в атоме осмия
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