and

The results of nuclear magnetic resonance (n.m.r.) and susceptibility measure-ments in CePt2, CePt5 and CeSn3 are presented together with other available results on these compounds. The magnetic susceptibility of both CePt2 and CePt5 can be understood on the basis of the crystal field splitting of the ground level of Ce3 + ion. There are two non-equivalent Pt sites in CePt5 and, consequently, two 195 n.m.r. lines with different Knight shifts have been observed. The 195Knightshifts in CePt2 and CePt5 are proportional to the corresponding bulk susceptibilities in the temperature region 100—300 K. However, the 195Pt Knight shifts for the two Pt sites in CePt5 behave ano-malously relative to the corresponding Knight shifts in PrPt5 and NdPt5. The magnetic susceptibility of CeSn3 shows a broad maximum around 135 K and a rapid rise below 30 K. The 119Sn Knight shift in CeSn3 in the temperature region 1.2—300 K is not proportional to the bulk susceptibility. The electrical resistivity of CeSn3 shows a T2 term at low temperatures and the coefficien