Consider the insoluble compound iron(II) carbonate , FeCO3 . The iron(II) ion also forms a complex with cyanide ions . Write a balanced net ionic equation to show why the solubility of FeCO3 (s) increases in the presence of cyanide ions and calculate the equilibrium constant for this reaction. For Fe(CN)64- , Kf = 7.7×1036 . Use the pull-down boxes to specify states such as (aq) or (s).

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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