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Calculate the EAN of the metal in the following complexes and compare it with the atomic number of nearest noble gas.A. `[AuCL_(2)]^(-1)`B. `Fe(C_(2)O_(4))_(3)]^(3-)`C. `[Cr(H_(2)O)_(4)NH_(3)]^(2+)`D. `[Zn(OH)_(4)]^(2-)`

Answer» a) `[AuCl_(2)]^(-)` : EAN = `(79-1+2xx2)` = 82,` Xe(Z=86)`
b) `[Fe(C_(2)O_(4))_(3)]^(3-)`: EAN = `(26-3 +2xx6)`=35, `Kr(Z=36)`
d) `[Cr(H_(2)O)_(4)NH_(3)]^(2+)` : EAN = `(24-2+2 xx 6)` = 34 , `Kr(Z=36)`
d) `[Zn(OH)_(4)]^(2-)` : EAN = `(30-2+2xx4)` = 36, Kr(Z=36)
`e( [Ni(Py)(en) (NH_(3))]^(2+)` : EAN= `(28 -2+2xx6)`=36, Kr(Z=36)


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