M Harvard is lo C My Blackboa Cengageer takecovalentActivity dowocator assignmen

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M Harvard is lo C My Blackboa Cengageer takecovalentActivity dowocator assignment takestakeAssignmentsessionLocator assignment take Use the References to access important values if reded for this qurstion. Formal Charge The formal charge is the "charge" an element would have in a molecule or ion if all of the bonding electrons were shared equally between atoms. We can draw three inequivalent Lewis structures for the selenite ion, Seo, r. The concepts of formal charge and electronegativity can help us choose the structure that is the best representation 1.Assign formal charges to the elements in each of the structures below. Note: Count oxygen atoms starting from the left for each structure. Se ormal Charge Beno

Explanation / Answer

Formal charge = Total number of valence electrons - number of bonds - number of lone pair of electrons.

Number of valence electrons in C = 4

Number of valence electrons in N = 5

Number of valence electrons in O = 6

            A                B                  C

C        -1                -3                 -2

N      +1               +1                +1

O       -1               +1                 0

Smaller the charge separation more is the stability of that Lewis structure.

SO, the best Lewis structure is (A)

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