The cyanide is C N − A carbon atom has 4 valance electrons and nitrogen has 5. Below is a Lewis-dot-structure of cyanide. :N≡C. The carbon atom is still one electron short of having a full octet and so it will seize another electron from almost anything, making the cyanide ion negative and whatever it took the electron from it now positive.
Cyanide ions are negatively charged because they have gained an extra electron. Cyanide poisoning inhibits cytochrome c oxidase, leading to a decrease in ATP synthesis and a decrease in the pH of the intermembrane space. ;
The cyanide ion (CN^{-}) is negatively charged due to the total of 10 valence electrons it possesses: 4 from carbon and 5 from nitrogen, plus one additional electron. This extra electron results in more electrons than protons, creating a -1 charge. Furthermore, the Lewis structure illustrates a stable configuration where carbon forms a triple bond with nitrogen, leading to the negative charge of the ion.
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