Question

3. Напишіть формули оксидів, які відповідають наступним гідроксидам: LiOH, Mg(OH)2, Al(OH)3, Ca(OH)2. Назвіть записані вами речовини,Вкажіть валентність елемента у оксиді.​

Answer 1

Ответ:

Li2O, MgO, Al2O3, CaO

Объяснение:

1 валетнтність, 2 вал, 3 вал, 2 вал

Answer 2

Oxides corresponding to hydroxides:

The formulas of the oxides corresponding to the given hydroxides are as follows:

1. Lithium hydroxide (LiOH) corresponds to lithium oxide (Li2O). - The valency of lithium in the oxide is +1.

2. Magnesium hydroxide (Mg(OH)2) corresponds to magnesium oxide (MgO). - The valency of magnesium in the oxide is +2.

3. Aluminum hydroxide (Al(OH)3) corresponds to aluminum oxide (Al2O3). - The valency of aluminum in the oxide is +3.

4. Calcium hydroxide (Ca(OH)2) corresponds to calcium oxide (CaO). - The valency of calcium in the oxide is +2.

Please note that the valency of an element in an oxide is determined by the charge it carries in the compound.