Question

Срочно помогите!! пж!!!!определить валентность элементов по формуле вещества CO MnO2 Ci2O5 CaCL2

Answer 1

 2 2     4  2      5   2      2    1   -  Валентность
CO , MnO2 , Cl2O5 , CaCL2

Answer 2

Determining Valency of Elements in Chemical Compounds

To determine the valency of elements in the given chemical compounds, we can analyze the chemical formulas of each compound.

1. CO (Carbon Monoxide): - In carbon monoxide (CO), the valency of carbon is +2 and the valency of oxygen is -2. - The valency of carbon is determined by the fact that carbon typically forms 4 covalent bonds, and in CO, it shares 2 electrons with oxygen, resulting in a valency of +2. - The valency of oxygen is -2 due to its tendency to gain 2 electrons to achieve a stable octet configuration.

2. MnO2 (Manganese Dioxide): - In manganese dioxide (MnO2), the valency of manganese is +4 and the valency of oxygen is -2. - Manganese typically exhibits a valency of +2, +3, +4, +6, or +7. In MnO2, manganese has a valency of +4, as it shares 4 electrons with the two oxygen atoms. - The valency of oxygen remains -2 as it gains 2 electrons to achieve a stable octet configuration.

3. Cl2O5 (Dichlorine Pentoxide): - In dichlorine pentoxide (Cl2O5), the valency of chlorine is -1 and the valency of oxygen is -2. - Chlorine typically exhibits a valency of -1 in its compounds, and in Cl2O5, each chlorine atom has a valency of -1, resulting in a total valency of -2 for the two chlorine atoms. - The valency of oxygen remains -2 as it gains 2 electrons to achieve a stable octet configuration.

4. CaCl2 (Calcium Chloride): - In calcium chloride (CaCl2), the valency of calcium is +2 and the valency of chlorine is -1. - Calcium typically exhibits a valency of +2, as it readily loses 2 electrons to achieve a stable octet configuration. - Chlorine typically exhibits a valency of -1, as it gains 1 electron to achieve a stable octet configuration.

These valencies are determined based on the typical behavior of elements in chemical compounds.

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