Write the Lewis structure for`SO_(5)^(2-)`( Per oxodisulphate ion) .

Explanation

V (Total no of valence `e^(-,)s`)
` 1 xx 6 ("for S") +5 xx 6 ("for O")`
`+2`(for two -ve charge)
`=38 e^(-,) s`
Step `O`(Total no of `e^(-,)s` for octet)
`= x 8 ("for S") + 5 xx 8 ("for O")`
` = 48 e^(-,)s`
Step 3 (Shared `e^(-,)s` )
`( O -V) =48 -38 10 e^(-,)s`
Skeletal structure with 10 shaeed `e^(-,)s`
`[O* *overset(underset(ddot)(O))underset(O)underset(overset(.)(.))(S)* *O* *O]^(2-)`
step 5 `U` (unshared `e^(-')s) = (V -S)`
`38 -10 =28 e^(-,)s`
step 6 Add 28 unshared `e^(-,)s` to complete the Lewis structure
Note (xx) reperesents one unshared electrone So the number of unshared `e^(-,)s =28`

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