Question

ребат учительница по химии задала выучить тему Общие сведения об элементах VIA группы.Сказала найти в интернете. помогите пожалуйста

Answer 1

Ответ:

В VIA –группу Периодической системы Д.И. Менделеева входят кислород O , сера S , селен Se , теллур Te и полоний Po . Элементы этой группы, кроме кислорода, называют халькогенами, что означает «рождающие медь». Происхождение название связано с тем, что эти элементы входят в состав минералов, содержащих медь.

Строение элементов группы

На внешнем энергетическом уровне атомов элементов VIA –группы содержится шесть электронов, конфигурация внешнего энергетического уровня ns(в квадрате) ns(в 4 степени) .

В невозбуждённом состоянии атомы халькогенов содержат на внешнем энергетическом уровне два неспаренных электрона, поэтому имеют валентность 2 .

В возбуждённом состоянии у атомов халькогенов происходит "распаривание" валентных электронов и увеличение валентности:

Answer 2

VIA Group Elements

Your teacher has asked you to learn about the VIA group elements in chemistry. The VIA group elements are a group of elements in the periodic table. Here's some information to help you understand this topic:

Definition: The VIA group elements, also known as Group 16 elements, are a group of elements in the periodic table. This group consists of oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po).

Properties: - Oxygen (O): Oxygen is a nonmetal with the atomic number 8. It is a highly reactive element and is essential for life. - Sulfur (S): Sulfur is a nonmetal with the atomic number 16. It is known for its distinct smell and is used in various industrial processes. - Selenium (Se): Selenium is a nonmetal with the atomic number 34. It is important for biological processes and is used in electronic devices. - Tellurium (Te): Tellurium is a metalloid with the atomic number 52. It has various industrial applications, including in the production of solar panels. - Polonium (Po): Polonium is a metal with the atomic number 84. It is a rare and highly radioactive element.

Chemical Properties: The VIA group elements exhibit diverse chemical properties. For example, oxygen is known for its role in supporting combustion and respiration, while sulfur is used in the production of sulfuric acid. Tellurium and polonium are used in various industrial and scientific applications due to their unique properties.

Applications: These elements have a wide range of applications in various industries, including electronics, medicine, and manufacturing. For instance, selenium is used in photovoltaic solar cells, while tellurium is used in the production of alloys and semiconductors.

Conclusion: Learning about the VIA group elements is essential for understanding the periodic table and the properties of different elements. These elements play crucial roles in various natural and industrial processes, making them important subjects of study in chemistry.

I hope this information helps you in your studies! If you have any more questions or need further clarification, feel free to ask.