The valency of an element is the number of electrons that an atom of the element can lose, gain, or share to achieve a stable electron configuration. The valency of an element can be determined by looking at its position on the periodic table and understanding its electron configuration.
Here are some examples to help determine the valency of elements:
1. Sodium (Na) - Sodium is in Group 1 of the periodic table, which means it has 1 valence electron. Therefore, the valency of sodium is 1.
2. Oxygen (O) - Oxygen is in Group 16 of the periodic table, which means it has 6 valence electrons. Oxygen can gain 2 electrons to achieve a stable electron configuration, so its valency is 2.
3. Chlorine (Cl) - Chlorine is in Group 17 of the periodic table, which means it has 7 valence electrons. Chlorine can gain 1 electron to achieve a stable electron configuration, so its valency is 1.
4. Carbon (C) - Carbon is in Group 14 of the periodic table, which means it has 4 valence electrons. Carbon can share electrons to achieve a stable electron configuration, so its valency is 4.
By identifying the group number of an element on the periodic table, you can determine its valency and understand how it will react with other elements to form compounds.
How to get valency of element with examples
1 answer