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Results are given of electrical resistance measurements of pure palladium and palladium‐silver alloys at pressures of gaseous hydrogen in the range from several bar up to 25 kbar at 25 °C. A model for the explanation of the room temperature data as well as the low temperature anomaly is proposed. Its essential feature is the assumption of octa‐and tetrahedral sites occupation by hydrogen.

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Pd/Ru and Pd/Rh alloys have been loaded with hydrogen in high-pressure conditions. The resulting hydrogen contents were close to the stoichiometric composition, H/(Pd + Me) = 1. Lower hydrogen contents have been obtained by successive partial desorptions. The thermoelectric power and electrical resistance of one-and two-phase alloys have been measured simultaneously in the temperature range between 80 and 300 K. A Nordheim-Gorter type correlation of the two quantities has been observed in many cases and the partial thermopowers corresponding to electron-phonon scattering and lattice disorder could be determined. The observed anomalous behaviour of the total and partial thermopowers is attributed to virtual bound states of ruthenium or rhodium.

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