Предмет: Химия, автор: Tommyi

Химический элемент с конфигурацией 1s22s22p63s2 расположен в:


2м периоде 2 группе

3м периоде 2 группе

3м периоде 1 группе

2м периоде 3 группе

Ответы

Автор ответа: Eixibb
1

Ответ:

Элемент расположен в 3м периоде 2 группе(Mg).

Объяснение:

Автор ответа: nikitosads65
1

Объяснение:

2м периоде 2 группе - Be (Берилий)

3м периоде 2 группе - Mg( Магний)

3м периоде 1 группе - Na(Натрий)

2м периоде 3 группа - B(Бор)

1s22s22p63s2 - Mg(Магний)

3м периоде 2 группе.

Електронна формула 1s² 2s² 2p⁶ 3s² нам показує, що елемент знаходиться в 3 періоді, в другій групі. Число електронів у нього 12, значить заряд ядра атома цього елемента дорівнює +12. Заряд ядра чисельно відповідає номеру елемента. Дивимося в періодичну таблицю і знаходимо елемент під номером 12. Це елемент Магній. Він знаходиться в третьому періоді, у другій групі, головній підгрупі.

Похожие вопросы
Предмет: Английский язык, автор: Nastya365petkova
Complete the sentences

1. A: Did you like the movie "The Reader "
B: I don't know. I (see, never) ____________ that movie.

2. Sam (arrive) ____________ in Kiev a week ago.

3. My best friend and I (know) ____________ each other for over fifty years. We still get together once a week.

4. Mark is a fantastic writer. He (write) ____________ ten very creative short stories in the last year. One day, he'll be as famous as Shevchenko.

5. I (have, not) ____________ this much fun since I (be) ____________ a kid.

6. Things (change) ____________ a great deal at Rothen, Inc. When we first (start) ____________ working here three years ago, the company (have, only) ____________ six employees. Since then, we (expand) ____________ to include more than 2000 full-time workers.

7. I (tell) ____________ him to stay on the path while he was hiking, but he (wander) ____________ off into the forest and (be) ____________ bitten by a fly.

8. Listen Liza, I don't care if you (miss) ____________ the bus this morning. You (be) ____________ late to work too many times. You are fired!

9. Sergey is from Vyshgorod, which is hundreds of miles from the coast, so he (see, never) ____________ the ocean. He should come with us to Miami.

10. How sad! Dmitriy (dream) ____________ of going to California before he died, but he didn't make it. He (see, never) ____________ the ocean.

11. In the last hundred years, traveling (become) ____________ much easier and very comfortable. In the 19th century, it (take) ____________ two or three months to cross North America by covered wagon. The trip (be) ____________ very rough and often dangerous. Things (change) ____________ a great deal in the last hundred and fifty years. Now you can fly from New York to Los Angeles in a matter of hours.

12. Anton, I can't believe how much you (change) ____________ since the last time I (see) ____________ you. You (grow) ____________ at least a foot!

13. This tree (be) ____________ planted by the settlers who (found) ____________ our city over four hundred years ago.

14. This mountain (be, never) ____________ climbed by anyone. Several mountaineers (try) ____________ to reach the top, but nobody (succeed, ever) ____________. The climb is extremely difficult and many people (die) ____________ trying to reach the summit.

15. I (visit, never) ____________ Africa, but I (travel) ____________ to South America several times. The last time I (go) ____________ to South America, I (visit) ____________ Brazil and Peru. I (spend) ____________ two weeks in the Amazon, (hike) ____________ for a week near Machu Picchu, and (fly) ____________ over the Nazca Lines
Предмет: Математика, автор: fatimafaracaliyeva
Предмет: Физика, автор: fluded1234t