The properties of the (21+) isomer of 94Ag, unprecedented in the entire nuclear chart, are presented with particular emphasis on its hindered one-proton and enhanced two-proton radioactivity. The tasks emerging from these results concerning experimental and theoretical efforts are discussed.
PACS numbers: 23.50.+z, 21.10.2k, 21.60.Cs, 27.60.+j
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