Answer to Question #286213 in Inorganic Chemistry for Larry

Question

Q2

when cobalt (II) chloride is treated, under certain conditions, with bidentate ligand, NH2CH2CH2NH2, ( which can be represented by the symbol en), the compounds ( CoCI2(en)2) CI is formed.

questions

a) what is the oxidation state of cobalt in the compound formed?

b) what is the meaning of the term bidentate as applied to a king and?

state the co-ordination number of cobalt in this compound?

d) when this compound is treated with aqueous silver nitrate, explain why only a single mole of survey chloride is produced per mole of compound?

please detailed answers 🙏🏾

Answer 1

The oxidation state, or oxidation number, is the hypothetical charge of an atom if all of its bonds to different atoms were fully ionic. It describes the degree of oxidation (loss of electrons) of an atom in a chemical compound. Conceptually, the oxidation state may be positive, negative or zero. While fully ionic bonds are not found in nature, many bonds exhibit strong ionicity, making oxidation state a useful predictor of charge.

The oxidation state of an atom does not represent the "real" formal charge on that atom, or any other actual atomic property. This is particularly true of high oxidation states, where the ionization energy required to produce a multiply positive ion is far greater than the energies available in chemical reactions. Additionally, the oxidation states of atoms in a given compound may vary depending on the choice of electronegativity scale used in their calculation. Thus, the oxidation state of an atom in a compound is purely a formalism. It is nevertheless important in understanding the nomenclature conventions of inorganic compounds.