Question

Define valency by taking
example of chlorine and oxygen.​

Answer 1

Answer:

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. Thus, the valency of oxygen is (8 ˆ' 6) i.e., two.Aug 6, 2020

Answer 2

Answer:

The combining capacity of an atom of an element is known as its valency. If the atom has 1 to 3 electrons in its valance shell, it donates them to other elements nd form electro positive ions. However, if it has 4 to 8 valance electrons, then it accepts electrons from other elements and form electronegative ions.

Oxygen has atomic number 8 and Electronic configuration (K) 2, (L) 6

Oxygen has valency = 8-6=2

Chlorine has atomic number 17 and Electronic Configuration (K) 2, (L) 8, (M) 7

Chlorine has valency = 8-7=1