http://en.wikipedia.org/wiki/Silver silver is a transition element http://en.wikipedia.org/wiki/Transition_metal Transition metal compounds are paramagnetic when they have one or more unpaired d electrons.[15] In octahedral complexes with between four and seven d electrons both high spin and low spin states are possible. Tetrahedral transition metal complexes such as [FeCl4]2 are high spin because the crystal field splitting is small so that the energy to be gained by virtue of the electrons being in lower energy orbitals is always less than the energy needed to pair up the spins. Some compounds are diamagnetic. These include octahedral, low-spin, d6 and square-planar d8 complexes. In these cases, crystal field splitting is such that all the electrons are paired up.