Question

Установи вiдповiднiсть мiж хiмiчним елементом і його вищою валентністю у сполуках з Оксигеном: 1-Na; 2 - Be; 3 - B; 4-с. a) I; 6) II; c) IV; д) V; ж) VI; 3) VII. B) III; Срочнооо

Answer 1

Matching Chemical Elements with their Higher Valency in Compounds with Oxygen:

To match chemical elements with their higher valency in compounds with oxygen, we need to consider the valency or oxidation state of the element when it forms a compound with oxygen. Here is the matching for the given elements:

1. Na (Sodium) - Sodium typically exhibits a valency of +1 when it forms compounds with oxygen. Therefore, the matching for Na is I.

2. Be (Beryllium) - Beryllium generally exhibits a valency of +2 when it forms compounds with oxygen. Therefore, the matching for Be is II.

3. B (Boron) - Boron can exhibit different valencies when it forms compounds with oxygen. It can have a valency of +3 or +5. However, in most common compounds with oxygen, boron exhibits a valency of +3. Therefore, the matching for B is III.

4. C (Carbon) - Carbon typically exhibits a valency of +4 when it forms compounds with oxygen. Therefore, the matching for C is IV.

5. I (Iodine) - Iodine generally exhibits a valency of +7 when it forms compounds with oxygen. Therefore, the matching for I is VII.

6. O (Oxygen) - Oxygen itself is the element being matched with its higher valency. Oxygen typically exhibits a valency of -2 when it forms compounds with other elements. Therefore, the matching for O is II.

Please note that the valency of elements can vary depending on the specific compound and its chemical environment. The valencies mentioned here are general trends observed in common compounds.