CBSE Class 11-science Answered
Following formula is used to calculate the formal charge in any molecule.
Formal Chrge = (No. of e- in free atom)-1/2(No. of bonding e-)-(No. of nonbonding e-)
For carbon dioxide first draw the molecule and then calculate for the three atoms.
For first oxygenatom, FC = (6) -1/2(4)-(4)= 6-6 =0
For carbon atom, FC = (4) -1/2(8) - (0) = 4-4 =0
For second oxygen atom, FC = (6) -1/2(4)-(4)= 6-6 =0
So total formal charge on the molecule is zero.
Bond order is the number of bonding pairs of electrons between two atoms. In a covalent bond between two atoms, a single bond has a bond order of one, a double bond has a bond order of two, a triple bond has a bond order of three, and so on.
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