Question

3.определить валентность Fe²O³ C¹O⁷H³BO³, HCe HNO³ CuO​

Answer 1

Ответ:

Объяснение:

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Answer 2

Valence of Compounds

The valence of a compound refers to the combining capacity of an element, which determines the number of electrons it can gain, lose, or share to form chemical bonds. Here are the valences of the compounds you mentioned:

1. Fe₂O₃ (Iron(III) oxide): Iron has a valence of +3, and oxygen has a valence of -2. Therefore, in Fe₂O₃, there are two iron atoms with a total valence of +6 and three oxygen atoms with a total valence of -6 [[1]].

2. C₁O₇H₃BO₃ (Perchloric acid): Carbon usually has a valence of +4, oxygen has a valence of -2, hydrogen has a valence of +1, and boron has a valence of +3. Therefore, in C₁O₇H₃BO₃, there is one carbon atom with a valence of +4, seven oxygen atoms with a total valence of -14, three hydrogen atoms with a total valence of +3, and one boron atom with a valence of +3 [[2]].

3. HCe (Hydrogen cerium): Hydrogen usually has a valence of +1, and cerium has a valence of +3 or +4, depending on the compound. Therefore, in HCe, there is one hydrogen atom with a valence of +1 and one cerium atom with a valence of +3 or +4 [[3]].

4. HNO₃ (Nitric acid): Hydrogen usually has a valence of +1, nitrogen has a valence of +5, and oxygen has a valence of -2. Therefore, in HNO₃, there is one hydrogen atom with a valence of +1, one nitrogen atom with a valence of +5, and three oxygen atoms with a total valence of -6 [[4]].

5. CuO (Copper(II) oxide): Copper usually has a valence of +2, and oxygen has a valence of -2. Therefore, in CuO, there is one copper atom with a valence of +2 and one oxygen atom with a valence of -2 [[5]].

I hope this helps! Let me know if you have any further questions.