Ответ:
А) H, Li, Na, K, Cu, Rb, Ag, Cs, Au, Fr, Rg
б) Li, Be, B, C, N, O, F, Ne
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Ответ:
А) H, Li, Na, K, Cu, Rb, Ag, Cs, Au, Fr, Rg
б) Li, Be, B, C, N, O, F, Ne