Question

Визначити валентність хімічних елементів за формулами HgO, B2O3, MgCl2, SiO2, Cl2O7, N2O

Answer 1

По Украински не понимаю , но скорее всего вы спросили валентнось ,  так вот : Hg=2 ; B=3 ; Mg=2 ; Si=4 ; Cl2=7 ; N2= 1

Answer 2

To determine the valency (valence) of chemical elements in compounds, we need to consider the oxidation states of the elements in those compounds. Valency refers to the combining capacity of an element, which is determined by the number of electrons it can gain, lose, or share during a chemical reaction to achieve a stable electron configuration.

Here are the valencies of the elements in the given compounds:

1. HgO: Mercury oxide Hg (Mercury) usually exhibits a valency of +2 in most of its compounds. O (Oxygen) typically has a valency of -2 in compounds.

So, the valency of elements in HgO is: Hg: +2 O: -2

2. B2O3: Boron oxide B (Boron) can show a valency of +3 or +1 in some cases, but it mostly exhibits a valency of +3. O (Oxygen) typically has a valency of -2 in compounds.

So, the valency of elements in B2O3 is: B: +3 O: -2

3. MgCl2: Magnesium chloride Mg (Magnesium) generally exhibits a valency of +2 in compounds. Cl (Chlorine) usually has a valency of -1 in compounds.

So, the valency of elements in MgCl2 is: Mg: +2 Cl: -1

4. SiO2: Silicon dioxide Si (Silicon) can have a valency of +4 or -4, but in most cases, it exhibits a valency of +4. O (Oxygen) typically has a valency of -2 in compounds.

So, the valency of elements in SiO2 is: Si: +4 O: -2

5. Cl2O7: Dichlorine heptoxide Cl (Chlorine) usually has a valency of -1 in compounds.

So, the valency of elements in Cl2O7 is: Cl: -1

6. N2O: Dinitrogen monoxide (Nitrous oxide) N (Nitrogen) can exhibit various valencies like -3, -2, +1, +2, +3, +4, or +5, but in this compound, it has a valency of +1. O (Oxygen) typically has a valency of -2 in compounds.

So, the valency of elements in N2O is: N: +1 O: -2

Keep in mind that elements can exhibit different oxidation states in different compounds, so it's essential to consider the specific compound in question when determining the valency of elements.