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Oxidation Numbers

An oxidation number is a positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable.

1,632 Questions

What is the oxidation number of Co2O3?

The oxidation number of cobalt in Co2O3 is +3, and the oxidation number of oxygen is -2. This is based on the rules for assigning oxidation numbers, where the overall charge of the compound must equal zero.

What is Oxidation number of halogens?

Halogens typically have an oxidation number of -1 in compounds because they have seven valence electrons and need to gain only one electron to achieve a full octet. Exception: in compounds with oxygen or other halogens, halogens may have positive oxidation numbers.

What is the oxidation number of C in CO3 -2?

The oxidation number of C in CO3^2- is +4. Each oxygen atom has an oxidation number of -2, and since the overall charge of the carbonate ion is 2-, the carbon atom must have an oxidation number of +4 to balance the charge.

What is the oxidation state of NA in NA2O2 and K in KO2?

The oxidation state of Na in Na2O2 is +1, as each Na atom carries a +1 charge while the O atoms carry a -1 charge. In KO2, the oxidation state of K is +1, similar to Na2O2, as each K atom carries a +1 charge while the O atoms carry a -1/2 charge.

The sum of the oxidation number Ina neutral compound is always what?

The sum of the oxidation numbers in a neutral compound is always zero. This is because the total charge of the compound is zero, so the sum of the oxidation numbers of the individual elements must also add up to zero.

Sum of oxidation number of all the carbons in C6H5CHO?

The sum of the oxidation numbers of all carbons in C6H5CHO is equal to 0. This is because the oxidation number of carbon is -2 in CH3CHO, and there are six carbons in C6H5CHO. So, 6 * (-2) = -12. However, since the overall charge of the molecule is 0, the sum of the oxidation numbers of all carbons must be 0 to balance the charge.

What is the oxidation number for NiS?

The oxidation number for Ni in NiS (nickel sulfide) is +2, while the oxidation number for S (sulfur) is -2. This is because in a compound, the overall charge must be neutral.

What is the oxidation number of B in H3BO3?

The oxidation number of B in H3BO3 is +3. Each hydrogen atom has an oxidation number of +1, and the overall molecule has a neutral charge. Since oxygen has an oxidation number of -2, the oxidation number of B must be +3 in order to balance the charges.

What is the oxidation state of Li in reactant?

The oxidation state of Li in its elemental form (Li) is 0 because it is in its pure state and not involved in a chemical reaction where it would gain or lose electrons.

What is NaCIO4?

NaClO4 is sodium perchlorate, which is a chemical compound commonly used as an oxidizing agent in chemistry and industry. It is a white crystalline solid that is soluble in water and stable under normal conditions.

Most of the time the oxidation number of the nonmetals are?

Negative (such as -2 in compounds like O2 or Cl-) or positive (such as +3 in compounds like NCl3), depending on the element and the compounds involved.

What is the oxidation number of chlorine in AlCl4?

The oxidation number of chlorine in AlCl4 is -1. Since aluminum has an oxidation number of +3, the overall charge of the AlCl4 ion is -1, meaning each chlorine atom has an oxidation number of -1 to balance the charge.

What is the oxidation number of C in the compound CH2Br2?

In CH2Br2, carbon has an oxidation number of -2 because hydrogen has an oxidation number of +1 and bromine has an oxidation number of -1. The sum of the oxidation numbers in a neutral compound is zero.

What is the oxidation number of Br in BrO-2?

The oxidation number of Br in BrO2- is +3. Oxygen is typically assigned an oxidation number of -2, so in this case the total charge on the ion is -1, meaning bromine must have an oxidation number of +3.

What is the oxidation number of IF?

The oxidation number of iodine in IF is +1 because fluorine is more electronegative than iodine and will take on a charge of -1. Since the compound is neutral, the oxidation number of iodine must be +1 to balance the -1 charge of fluorine.

Why do elements with positive oxidation number easily combined with those having a negative oxidation number?

Elements with positive oxidation numbers have excess electrons that they can share or transfer with elements having negative oxidation numbers that have electron deficiencies. This transfer or sharing of electrons allows the elements to achieve a more stable electron configuration, forming compounds through the formation of ionic or covalent bonds.

What are the oxidation number of Tc?

Technetium (Tc) typically has oxidation states ranging from -1 to +7, with the most common oxidation states being +4 and +7. The specific oxidation number of technetium in a compound depends on the overall charge and bonding characteristics of the compound.

Do all metals have two oxidation numbers?

No, not all metals have two oxidation numbers. Some metals may have multiple oxidation numbers depending on the bonding situation and the compounds they form.

What is the oxidation number for k2cro4?

In K₂CrO₄, the oxidation number of potassium (K) is +1, and the oxidation number of oxygen (O) is -2. Since the compound is neutral, the oxidation number of chromium (Cr) can be calculated as follows: 2(+1) + Cr + 4(-2) = 0. Solving for chromium, the oxidation number of chromium in K₂CrO₄ is +6.

What are the Oxidation numbers of the elements in WO4 2?

The oxidation number of tungsten (W) in WO4^2- is +6. Since the overall charge of the ion is 2-, each oxygen atom has an oxidation number of -2.

What is the oxidation number of c in ch3oh and in hcooh?

H is +1, O is -2 overall carbon will have an oxidation # of -3

What is the oxidation number of ZnHSO32?

The oxidation number of zinc (Zn) is always +2. For hydrogen (H), it is +1. For sulfur (S) in the sulfite ion (SO3^2-), it is +4 and for oxygen (O), it is always -2. By adding up the oxidation numbers of each element in ZnHSO3^2-, we find that the oxidation number of sulfur is +6.

What is the oxidation number of BrF3?

Br +3, balanced by 3 fluorines each with -1.

What is the oxidation number for each atom in AsH3?

In AsH3, arsenic (As) has an oxidation number of -3 since hydrogen (H) is always assigned an oxidation number of +1 in compounds.

What is the oxidation no Of S In s4o6-2?

To determine the oxidation number of sulfur (S) in the polyatomic ion S4O6^2-, we can set up an equation where the sum of the oxidation numbers equals the charge of the ion. In this case, the total charge is -2. Each oxygen atom has an oxidation number of -2, so the total oxidation number contributed by oxygen is -12. To solve for sulfur, we set up the equation: 4x + 6(-2) = -2, where x is the oxidation number of sulfur. By solving this equation, we find that the oxidation number of sulfur in S4O6^2- is +5.