Question

Визначне валентність: FeCl3 ; FeCl2

Answer 1

1 железо 3 валентность
2 железо  2 валентность

Answer 2

Valency of FeCl3 and FeCl2

The valency of an element is the combining power of an element, which is determined by the number of electrons it can lose, gain, or share when it reacts with other elements. In the case of FeCl3 and FeCl2, the valency of iron (Fe) and chlorine (Cl) can be determined based on their electronic configurations and the nature of the chemical bonds they form.

FeCl3: The compound FeCl3 is formed by the combination of iron (Fe) and chlorine (Cl). Iron can exhibit variable valency, but in the case of FeCl3, iron has a valency of +3. This means that in FeCl3, iron loses three electrons to form a stable 3+ cation. Each chlorine atom then gains one electron to form a stable 1- anion. This results in the formation of the compound FeCl3, where iron has a valency of +3.

FeCl2: Similarly, in the compound FeCl2, iron has a valency of +2. This indicates that in FeCl2, iron loses two electrons to form a stable 2+ cation, while each chlorine atom gains one electron to form a stable 1- anion. As a result, the compound FeCl2 is formed, where iron has a valency of +2.

The valency of iron in FeCl3 and FeCl2 can also be understood by considering the electronic configuration of iron and the octet rule. Iron has the electronic configuration [Ar] 3d^6 4s^2. When it forms FeCl3, it loses three electrons to achieve a stable 3+ oxidation state, while in FeCl2, it loses two electrons to achieve a stable 2+ oxidation state.

In summary, the valency of FeCl3 is +3, and the valency of FeCl2 is +2.