Question

b. What is meant by valency of an element?
What is the relationship between the
number of valence electron and valency?
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Answer 1

Answer:

The combining capacity of an atom of an element to form a molecule is termed valency.

Answer 2

Explanation:

The combining capacity of an atom is called its valency. Actually it can be defined as the number of electrons that an atom may lose (or) gain during a chemical reaction (or) the number of electrons shared. The numbers of electrons in outermost shell (or) valency shell of an atom are called valency electrons.

The valency of an element is the number of atoms lost or gained by the atom of an element.

valence electrons are the number of electrons present in the outermost shell of an atom

valency of an element depends on the valence electrons

valency of atoms having 1,2,3 valence electrons

= number of valence electrons

valency of atoms having 5,6,7 valence electrons

= 8 - number of valence electrons