July 2022 2 14 Report
Укажите свойство, нехарактерное для щелочных металлов:

A)      основный
характер оксидов;

B)      кислотный
характер оксидов;

C)      валентность
в соединениях равна I;

D)      энергично реагируют с кислородом, хлором,
серой и водой.
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