difference between oxidation number and valency
Answers
1. Valency is the maximum no. of electrons which an atom can lose or gain while oxidation no. is the actual no. of electrons which the element lose or gain to form a molecule. 2. Valency is the property of an isolated atom while oxidation state is calculated for an atom is present in a molecule i.e, in a bonded state.Apr
Explanation:
Oxidation Number and Valency
Definition
Oxidation Number: Oxidation number is the charge of the central atom of a coordination compound if all bonds around that atom were ionic bonds.
Valency: Valency is the maximum number of electrons that an atom can lose, gain or share in order to become stabilized.
Application
Oxidation Number: Oxidation number is applied for coordination complexes.
Valency: Valency is used for any element.
Calculation
Oxidation Number: Oxidation number can be calculated considering the ligands and the overall charge of the coordination complex.
Valency: Valency can be determined by obtaining the electron configuration.
Representation
Oxidation Number: Oxidation number is given in Roman numbers that are inside brackets.
Valency: Valency is given in Hindu-Arabic numbers.
Conclusion
Although the definition of Valency says that it is the maximum number of electrons used in bonding, transition elements can have different valencies. This is because transition metals can be stabilized by removing different numbers of electrons. Moreover, central atoms in coordination complexes can have different oxidation numbers according to the ligands that are attached to the atom.