For calculating formal charge of each o atom in phosphate ion, when I use the formala of FC given in ncert answer comes out to be -1 but otherwise -0. 75 using resonace formula. What would be the reason behind?
Answer (1)
20th May, 2021
Hello candidate,
The formula for calculating out the formal charge of a compound is given by the formula- Formal Charge = [Number of valence electrons on atom] – [number of non-bonded electrons + number of bonds].
Hence, using this formula we get the formal charge on phosphate ion equal to -1, but on experimental basis it comes out to be -.75 because of the involvement of valence electrons in resonance effect other than just chemical bonding .
Hope you found it helpful!
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