Give the coordination number and the charge of the central metal ion in each coordination compound: For the charges, enter your answers with the correct sign. e. g. if you think the answer is +1, enter the positive sign followed by the number 1. Na2[Zn(OH)4] coordination number = charge = K[Co(H2O)2(C2O4)2] coordination number = charge = [Ru(H2O)2(NH3)2Cl2]Br coordination number = charge =

Explanation:

Na₂[Zn(OH)₄]   :  2 Na⁺¹  + Zn(OH)₄⁻²

coordination no : 4 , central metal ion is Zn , charge on it  =  + 2

(+ 2 -  4 = -2 )

K[Co(H₂O)₂(C₂O₄)₂] :   K⁺  +  Co(H₂O)₂(C₂O₄)₂⁻

coordination no = 2 + 2 = 4  , two for H₂O and 2 for C₂O₄ ⁻²

charge on metal Co is + 3   [  - 4+ 3  = - 1 ]  

[Ru(H₂O)₂(NH₃)₂Cl₂]Br  = Ru(H₂O)₂(NH₃)₂Cl₂ ⁺¹  +  Br ⁻¹

coordination no : 2+ 2 + 2 = 6 ( 2 for H₂O , 2 for NH₃ , 2 for Cl )

central metal ion is Ru : charge on it = + 3 .

( + 3 - 2 = + 1 )

the answer is c. nacl