Answer:
Examples of complex compound include potassium ferrocyanide K4[Fe(CN)6] and potassium ferricyanide K3[Fe(CN)6]. Other examples include pentaamine chloro cobalt(III) chloride [Co(NH)5Cl]Cl2 and dichlorobis platinum(IV) nitrate [Pt(en)2Cl2](NO3)2.
21% oxygen and 78%nitrogen
Explanation:
The answer is A.
K=+1
Mn= +7
O= -2
That’s it!!!
B
I hope it helps you good luck
they tested the bone age
