Calculate the oxidation state of the central ion in [CoCl4(NH3)2]-1

Answer 1

To calculate the oxidation state of the central ion in [CoCl4(NH3)2]-1, we need to take into account the charges of the ligands and any known oxidation states for the other elements.

The chloride ligands have a charge of -1 each, and there are four of them, so their total charge is -4.
The ammonia ligands (NH3) are neutral, so they do not contribute any charge.

To find the oxidation state of the central ion (Co), we can use the equation:

Charge of central ion + Charge of ligands = 0

Let x be the oxidation state of Co.

x + (-4) + 0 = -1

x - 4 = -1

x = -1 + 4

x = +3

Therefore, the oxidation state of the central ion (Co) in [CoCl4(NH3)2]-1 is +3.