From the given list of formulas of substances write down the formulas: a) alkalis; b) bases insoluble in water: H2S, LiOH, NiO

From the given list of formulas of substances write down the formulas: a) alkalis; b) bases insoluble in water: H2S, LiOH, NiO, Fe (OH) 2, Sr (OH) 2, Cu (OH) 2, KOH, Cr (OH) 3, NaH, RbOH. Name the substances whose formulas you wrote out

a) LiOH – lithium hydroxide, KOH – potassium hydroxide, Sr (OH) 2 – strontium (II) hydroxide, RbOH – rubidium hydroxide.
b) Fe (OH) 2 – iron (II) hydroxide, Cu (OH) 2 – copper (II) hydroxide, Cr (OH) 3 – chromium (III) hydroxide.

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