Question

Схема распределения электронов по слоям в атоме химического элемента образующего соединения соответствующие общим формулам ЭН2 и ЭОA. 2e, 8e,4eБ. 2 е, 8 е, 3 e В. 2 е, 8 е, 2 еГ. 2 е, 8е, 1 е

Answer 1

Степень окисления элемента, как видно из формул, -2 или +2. Значит, на внешнем электронном уровне находятся либо 2, либо 6 электронов. Выбираем, соответственно, ответ В)

Answer 2

ответ В. 2 е, 8 е, 2 е т.к. на первом слое у всех 2, на втором у всех 8, а третий определяем по валентности

Answer 3

Scheme of Electron Distribution in an Atom

The electron distribution in an atom is determined by the arrangement of electrons in different energy levels or shells. The distribution follows certain rules, such as the Aufbau principle, Pauli exclusion principle, and Hund's rule. Let's examine the electron distribution in the atoms of the chemical elements that form compounds with the general formulas EN2 and EOA.

Electron Distribution in EN2

The general formula EN2 suggests that the compound is formed by an element (E) that has two electrons (2e) in its outermost energy level. To determine the electron distribution in the atom of this element, we need to identify the element's atomic number and its electron configuration.

Let's consider an example where the element E has an atomic number of 10. The atomic number represents the number of protons in the nucleus of an atom, which is also equal to the number of electrons in a neutral atom. Therefore, element E has 10 electrons.

To distribute these electrons in the atom's energy levels, we follow the Aufbau principle, which states that electrons fill the lowest energy levels first. The energy levels are labeled as 1s, 2s, 2p, 3s, 3p, and so on.

In the case of element E, the electron distribution would be as follows: - The first energy level (1s) can hold a maximum of 2 electrons, so it will be filled completely with 2 electrons. - The second energy level (2s) can also hold a maximum of 2 electrons, so it will be filled completely with 2 electrons.

Therefore, the electron distribution in the atom of element E, which forms compounds with the general formula EN2, would be 2e, 8e.

Electron Distribution in EOA

The general formula EOA suggests that the compound is formed by an element (E) that has two electrons (2e) in its outermost energy level and one electron (1e) in the next energy level. Again, we need to determine the element's atomic number and electron configuration to determine the electron distribution.

Let's consider an example where the element E has an atomic number of 11. This means that element E has 11 electrons.

Following the Aufbau principle, the electron distribution in the atom of element E, which forms compounds with the general formula EOA, would be as follows: - The first energy level (1s) can hold a maximum of 2 electrons, so it will be filled completely with 2 electrons. - The second energy level (2s) can also hold a maximum of 2 electrons, so it will be filled completely with 2 electrons. - The second energy level (2p) can hold a maximum of 6 electrons. In this case, only 1 electron will occupy the 2p orbital.

Therefore, the electron distribution in the atom of element E, which forms compounds with the general formula EOA, would be 2e, 8e, 1e.

I hope this explanation helps! Let me know if you have any further questions.