Question

Define valency by taking example of Chlorine and owygen​

Answer 1

Answer:

Define valency by taking examples of silicon and oxygen.

The valency of an element is the combining capacity of that element. The valency is determined by the number of valence electrons present in the atom of that element. If the number of valence electrons of the atom of an element is less than or equal to four, then the valency of that element is equal to the number of valence electrons.

For example, the atom of silicon has four valence electrons. Thus, the valency of silicon is four. On the other hand, if the number of valence electrons of the atom of an element is greater than four, then the valency of that element is obtained by subtracting the number of valence electrons from eight. For example, the atom of oxygen has six valence electrons. Thus, the valency of oxygen is (8 ˆ’ 6) i.e., two.

Explanation:

Answer 2

Answer:

Hope it helps you mate ....

Explanation:

The valency of an element is the combining capacity of that element. The valency is determined by the number of valence electrons present in the atom of that element. ... For example, the atom of oxygen has six valence electrons .....

Valency is defined as the combining capacity of the element. It is determined by the number of valence shell electrons present in the atom. 

If the number of valence electrons is less than or equal to 4 so the valency is the same as the number of electrons present. 

If the number of valence electrons is more than 4 then the valency is 8-(the number of valence shell electrons).

(2)Oxygen has an atomic number 8. The electronic configuration is 2, 6. The valency is (8-6)=2.