Consider the resonance frameworks for the carbonate ion. Just how much negative charge is on each oxygen the the carbonate ion? What is the shortcut order of each carbon-oxygen link in the rbonate ion?

Carbonate ion acts together a base and also it can form three resonance structures. If a compound has an ext number of resonance structures then that is more stable.

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Negative fee on each oxygen atom deserve to be calculation by separating the charge existing oxygen atom with variety of oxygen atoms.

Calculate the shortcut order of every C-O shortcut by making use of the complying with expression.

Bondorder=TotalnumberofbondsNumberofC−Obonds\\rmBond\\,\\rmorder\\,\\rm = \\,\\frac\\rmTotal\\,\\rmnumber\\,\\rmof\\,\\rmbonds\\rmNumber\\,\\rmof\\,\\rmC - O\\,\\rmbondsBondorder=NumberofC−ObondsTotalnumberofbonds​


Part a

The resonance structures of lead carbonate ion are,

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Here, 2 oxygen atoms have actually a fee of −1 - 1−1 and also other one is neutral.

So,thenegativechargeoneachoxygenatom=−2charge3=−0.67\\beginarrayc\\\\\\rmSo,\\,\\rmthe\\,\\rmnegative\\,\\rmcharge\\,\\rmon\\,\\rmeach\\,\\rmoxygen\\,\\rmatom\\,\\rm = \\,\\frac - \\rm2\\,\\rmcharge\\rm3\\\\\\\\ & & & & & \\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\,\\rm = \\, - \\rm0\\rm.67\\\\\\endarraySo,thenegativechargeoneachoxygenatom=3−2charge​​​​​​=−0.67​

Part b

The resonance structures of carbonate ion are,

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Total variety of bonds existing in the carbonate ion is four.

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Number of C-O (i.e. Solitary bonds) bonds in lead carbonate ion is three.

Bondorder=TotalnumberofbondsNumberofC−Obonds=43=1.33\\beginarrayc\\\\\\rmBond\\,\\rmorder\\,\\rm = \\,\\frac\\rmTotal\\,\\rmnumber\\,\\rmof\\,\\rmbonds\\rmNumber\\,\\rmof\\,\\rmC - O\\,\\rmbonds\\\\\\\\\\,\\rm = \\,\\frac43\\\\\\\\ = \\,1.33\\\\\\endarrayBondorder=NumberofC−ObondsTotalnumberofbonds​=34​=1.33​

Ans: part a

Thus, the an adverse charge on each oxygen atom that the lead carbonate ion is −0.67 - \\rm0\\rm.67−0.67

Part b

Thus, the shortcut order at each carbon-oxygen shortcut in the carbonate ion is 1.331.331.33