Вопрос школьника по предмету Химия
Число протонов и нейтронов для элемента с порядковый номером 16 соответственно равно …
Ответ учителя по предмету Химия
Ответ:16
Объяснение:Количество протонов и нейтронов численно совпадает с порядковым номером элемента
Похожие вопросы от пользователей
без иксов
1. Someone must call the police. 2. We can easily correct this mistake. 3. They may easily fool you, so be careful. 4. One can’t learn a foreign language in a few weeks. 5. They have to do it right now. 6. You can see these pictures in the Russian Museum. 7. We should warn them about the danger. 8. You can hear this hit everywhere. 9. People must keep dangerous chemicals in a safe place. 10. You shouldn’t leave the doors unlocked. 11. They may raise the price of electricity again. 12. You ought to air the room from time to time. 13. People must protect wildlife. 14. Aluminium [ælʊ’mɪniəm] is a valuable metal. You can use it again and again. As you can recycle this metal, nobody should throw away aluminium cans. 15. He is a rude boy. His mother must teach him good manners.
4 км 3 м 6 дм 9 см 7 мм = □ м 6 дм 9 см 7 мм = □ дм 9 см 7 мм = □ см 7 мм = □ мм
We’re looking ……… to our summer holiday.
Never ……….. your temper when you talk to your children.
You must not ………. litter on beaches.
If necessary,use the fire …………. to put out the fire.