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Chemical Bonding and Molecular Structure
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28/08/2021 5:20 pm
Topic starter
In PO43-, the formal charge on each oxygen atom and the P - O bond order respectively are
(a) –0.75, 0.6
(b) –0.75, 1.0
(c) –0.75, 1.25
(d) –3, 1.25
1 Answer
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28/08/2021 5:24 pm
Correct answer: (c) –0.75, 1.25
Explanation:
Bond order = \(\frac{Number\;of\;bonds}{Number\;of Resonating\;structures}\)
= \(\frac{5}{4}\) = 1.25
Three unit negative charge is being shared by four O atoms. Formal charge = \(\frac{-3}{4}\)
= -0.75