число оксидов оснований кислот и солей в предлагаемом списке NH3,SO2,H2SO4,He, FeCl2,AL(OH) 3, NaOH, CO, F2 1)2,2,1и1 2)1,2,3и1 3)2,1,2 и 1 4) 2,1,1и1
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