The valency of an element indicates the way it will react in a chemical reaction. For example, oxygen has six outer electrons and only needs eight electrons to have a complete outer shell. It can either lose six electrons or gain two electrons. It is easier for an oxygen atom to gain two more electrons and therefore its valency is 2.
The valency of sulfate (SO4) is calculated by considering the individual valencies of the atoms that make up the ion. In sulfate, the sulfur atom has a valency of +6, and each oxygen atom has a valency of -2. Therefore, the overall valency of sulfate is -2, calculated as (+6) + 4(-2).
The valency of Cr2O7 is -6. This is because each oxygen atom has a valency of -2, giving a total valency of -14 for the seven oxygen atoms. Since the overall charge of the Cr2O7 ion is -2, the valency of the two chromium atoms must be +12 to balance out the negative charge.
The valency of sulfur in sulfuric acid is 6. Sulfuric acid has the chemical formula H2SO4, indicating that sulfur forms 6 bonds, with each oxygen atom contributing 2 bonds.
Oxygen has 6 valence electrons in its outer shell, which allows it to form two bonds with other atoms to achieve a stable octet configuration. This results in an oxidation state of -2 for oxygen in most compounds, making its valency 2.
The valency of Fe in Fe2O3 is +3. This is because oxygen typically has a valency of -2 and there are three oxygen atoms present in Fe2O3, making the overall charge -6. To balance the charge, the iron (Fe) atoms must have a valency of +3.
S = +6 valency O = -2 valency
Its valency is -2 Its chemical formula is Cr2O7
the valence is the outer level
The valency of sulfate (SO4) is calculated by considering the individual valencies of the atoms that make up the ion. In sulfate, the sulfur atom has a valency of +6, and each oxygen atom has a valency of -2. Therefore, the overall valency of sulfate is -2, calculated as (+6) + 4(-2).
6
The valency of Cr2O7 is -6. This is because each oxygen atom has a valency of -2, giving a total valency of -14 for the seven oxygen atoms. Since the overall charge of the Cr2O7 ion is -2, the valency of the two chromium atoms must be +12 to balance out the negative charge.
The valency of sulfur in sulfuric acid is 6. Sulfuric acid has the chemical formula H2SO4, indicating that sulfur forms 6 bonds, with each oxygen atom contributing 2 bonds.
Oxygen has 6 valence electrons in its outer shell, which allows it to form two bonds with other atoms to achieve a stable octet configuration. This results in an oxidation state of -2 for oxygen in most compounds, making its valency 2.
The valency of sulfite (-SO3) is 2-, meaning it has a charge of -2. This is because sulfur typically has a valency of 6 due to its position in the periodic table, and in sulfite it forms three single bonds with oxygen atoms and has one extra electron, giving it a total charge of -2.
Things are complicated if we use the term valency. It is better to use the term Oxidation state or Oxidation Number. In SO2, the oxidation state of sulphur is +4 and In SO3, the oxidation state of sulphur is +6.
The valency of Fe in Fe2O3 is +3. This is because oxygen typically has a valency of -2 and there are three oxygen atoms present in Fe2O3, making the overall charge -6. To balance the charge, the iron (Fe) atoms must have a valency of +3.
The valency of sulfur is 2-. The valency of sulfur is 2-. The valency of sulfur (S) is +2