Question

Визначити валентнисть: Li,Zr,Mo,Ag, In,I,Xe.

Answer 1

Li - 1
Zr - 4
Mo - 6
Ag - 1
In - 3
I - 7
Xe - 8

Answer 2

Valency, also known as valence or oxidation state, is the number of bonds an atom can form with other atoms. It depends on the number of valence electrons in an atom. For main group elements (representative elements), the valency is determined by the number of valence electrons.

To determine the valency of the given elements, we need to look at their positions in the periodic table:

1. Li (Lithium) - Group 1 (Alkali metals) - Valency: +1 (loses 1 electron to achieve a stable configuration).
2. Zr (Zirconium) - Group 4 (Transition metals) - Valency: +4 (loses 4 electrons to achieve a stable configuration).
3. Mo (Molybdenum) - Group 6 (Transition metals) - Valency: +6 (loses 6 electrons to achieve a stable configuration).
4. Ag (Silver) - Group 11 (Transition metals) - Valency: +1 (loses 1 electron to achieve a stable configuration).
5. In (Indium) - Group 13 (Post-transition metals) - Valency: +3 (loses 3 electrons to achieve a stable configuration).
6. I (Iodine) - Group 17 (Halogens) - Valency: -1 (gains 1 electron to achieve a stable configuration).
7. Xe (Xenon) - Group 18 (Noble gases) - Valency: 0 (noble gases typically do not form bonds, as they have a stable configuration).

Please note that elements in the transition metals group can sometimes exhibit multiple oxidation states (valencies), depending on the specific chemical environment and the compound they form. The valencies mentioned above are their common oxidation states.