Question

4. (а) Магний (Mg), является элементом ІІ группы. Запишите, сколько электронов находится во внешней оболочке атома магния, напишите электронную формулу.​

Answer 1

Відповідь:

в Магния на внешней оболочке 2 электрона

Mg  1S²2S²2P⁶3S²

Пояснення:

Answer 2

Magnesium (Mg) Electron Configuration

Magnesium (Mg) is an element in Group II of the periodic table. To determine the number of electrons in the outermost shell (valence electrons) of an atom of magnesium, we need to look at its electron configuration.

The electron configuration of magnesium is 1s^2 2s^2 2p^6 3s^2 This means that magnesium has a total of 12 electrons. The outermost shell, also known as the valence shell, is the third shell (3s^2), which contains 2 electrons. Therefore, there are 2 electrons in the outermost shell of a magnesium atom.

The electron configuration can be represented using the noble gas notation, which involves using the symbol of the nearest noble gas that precedes magnesium in the periodic table (neon, Ne), followed by the configuration of the remaining electrons. In the case of magnesium, the noble gas notation is [Ne] 3s^2.

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