Hydrides
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Potassium Hydride (KH) |
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Alkali Hydrides (LiH, NaH, KH, RbH, and CsH) |
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(A) Lithium Hydride; (B) Sodium Hydride; (C) Potassium
Hydride; (D) Potassium Hydrino (1/4) Hydride
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Calculated and experimental values for the ion separation distances and lattice energies for the ionic bond of hydrides of lithium, sodium, potassium, rubidium and cesium.
Calculations are made from exact, closed-form equations containing
physical constants only.
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Ion Separation Distance
(10-10m) |
Lattice Energy (kJ/mol) |
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Calc. |
Exp. |
Calc. |
Exp. |
| Li |
2.17 |
2.04 [1] |
911.1 |
912.5 [1] |
| Na |
2.33 |
2.44 [2] |
864.3 |
845.7 [2] |
| K |
2.86 |
2.85 [2] |
729.4 |
741.9 [2] |
| Rb |
2.99 |
3.02 [2] |
704.3 |
705.9 [2] |
| Cs |
3.24 |
3.19 [2] |
656.6 |
646.7 [1] |
References:
1. W. M. Muller, J. P. Blackledge, G. G. Libowitz,
Metal Hydrides, Academic Press, New York, (1968), pp. 217-229.
2. J. C. Bailar, H. J. Emeleus, R. Nyholm, A. F.
Trotman-Dickenson, (Editors), Comprehensive Inorganic Chemistry,
Pergamom Press, (1973), p. 401.
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