Mr[Fe] = Ar[Fe] = 55.845 = 55.845 = 56
Mr[C] = Ar[C] = 12.0107 = 12.0107 = 12
Mr[Mg] = Ar[Mg] = 24.305 = 24.305 = 24
Mr[K] = Ar[K] = 39.0983 = 39.0983 = 39
2, 3, 4, 1.
Объяснение:
Mr[Fe] = Ar[Fe] = 55.845 = 55.845 = 56
Mr[C] = Ar[C] = 12.0107 = 12.0107 = 12
Mr[Mg] = Ar[Mg] = 24.305 = 24.305 = 24
Mr[K] = Ar[K] = 39.0983 = 39.0983 = 39
2, 3, 4, 1.
Объяснение: