![]() As OCN- ion have one O atom, one C atom and one N atom, let us first calculate the total valence electrons for OCN- ion. Therefore, O atom contains 6 valence electrons, C atom contains 4 valence electrons and N atom contains 5 valence electrons in their valence shell. The oxygen atom belongs to 16 th group, carbon atom belongs to 14 th group and the nitrogen atom belongs to 15 th group of the periodic table. As we know that the OCN- ion involves three elements oxygen, carbon and nitrogen, we have to check the position of group of these three elements in the periodic table. Let us calculate the total valence electrons on OCN- ion. OCN- Structure’s total valence electrons calculation.The nitrogen atom in OCN- lewis structure bears a negative charge on it. In OCN- lewis structure, there is a single covalent bond between carbon and oxygen atom and a triple bond within oxygen and nitrogen atoms. It is a bridging and ambidentate ligand (ambidentate means it can coordinate with either of its two different elements). Most of cyanate compounds toxic to inhale, flammable and also can cause irritation to eyes, skin and mucous membranes. Cyanate is an anion consisting of three different elements i.e. It also has various salt forms like ammonium cyanate. The isomer of less stable fulminate anaion is the cyanate. Molecular geometry of OCN- is linear in shape. ![]() Molecular weight of OCN- is 42.017 g mol -1.
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