Chemical Bonding And Molecular Structure Question 355

Question: In $ PO_4^{3-} $ ion, the formal charge on each oxygen atom and $ P-O $ bond order respectively are

[DPMT 2004]

Options:

A) $ -0.75,\ 1.25 $

B) $ -0.75,\ 1.0 $

C) $ -0.75,\ 0.6 $

D) $ -3,\ 1.25 $

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Answer:

Correct Answer: A

Solution:

Bond order $ =\frac{\text{Total number of bonds between atoms}}{\text{Total number of resonating structure}} $

$ =\frac{5}{4}=1.25 $



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