Gamma-ray induced decomposition of double nitrates of lanthanides with univalent and divalent cations |
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| Authors: | Ms N G Joshi A N Garg |
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| Institution: | (1) Department of Chemistry, Nagpur University, 440 010 Nagpur, (India) |
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| Abstract: | Double nitrates of Na and K having the composition 2MINO3·LnIII(NO3)3·2H2O(LnIII=Pr, Nd, Sm, Eu, Gd, Tb and Dy) and of Ni and Cu with the composition 3MII(NO3)2·2LnIII(NO3)3·24H2O (LnIII=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb and Dy) have been prepared and their  -radiolytic decomposition studied up to 500 kGy. G(NO
2
–
) values of K double nitrates at 230 kGy follow the order Dy3+>Pr3+=Nd3+=Sm3+>Tb3+>Eu3+> Gd3+·G(NO
2
3+
) for NI double nitrates are higher than those of Cu double nitrates. Variation of G(NO
2
–
) with cationic radii and the number of  f electrons in lanthanide ion show a minimum at Eu. Thermal decomposition studies of double nitrates were also carried out. |
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| Keywords: | |
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