Abstract
Radiolysis of crystalline K
2Ni(C
2O
4)
2);6H
2O, K
2Ni(C
2O
4)
2 and Ni(C
2O
4));2H
2O has been investigated. The results showed that in K
2Ni(C
2O
4)
2);6H
2O, the initial
G(Ni
3+) has a value of 3.75 and drops to about 1.27 when the dose approaches 1.2 × 10
22 eV g
-1. The decrease in
G(Ni
3+) with increasing radiation dose is accompanied with an increase in
G(Ni
2+). In the irradiated anhydrated complex, the results however show an increase in
G(Ni
3+) and a decrease in
G(Ni
2+) with increasing radiation dose. The radiolysis of Ni(C
2O
4)·2H
2O showed an increase in
G(Ni
3+) with increasing radiation dose. A mechanism has been suggested to explain the observed results.