Question

What is valency . explain

Answer 1

Hii friend here is ur answer

When atoms of one element combine with the atoms of another element to form formula units, they do so in fixed numbers depending upon the capacities of the atoms to form bonds.Valency of an element is a measure of the combining capacity of its atom to form chemical bonds.Valency or Valence:Valency

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Answer 2

⭐⭐⭐⭐⭐ ANSWER ⭐⭐⭐⭐⭐


❄❄❄ VALENCY ❄❄❄

➡ The number of electrons donated or accepted or shared by the atom of an element to achieve stable electronic configuration (8 electrons in the outermost shell) is called its valency.

➡ In simple words, valency is the combining capacity of an atoms of an element.

➡ An atom which donates electrons is said to have a positive valency.

➡ Similarly, an atom which accepts electrons is said to have negative valency.

➡ Lithium, Sodium, Potassium, Zinc, Calcium, Aluminium, Chromium, etc. all are metals with positive valency.

➡ Chlorine, Bromine, Oxygen, Sulphur, Nitrogen, etc. alll are non-metals with negative valency.

❄❄ VARIABLE VALENCY ❄❄

➡ Certain elements exhibit more than one valencies. Then they are said to have variable valencies.

➡ For example, Mercury (1,2) ; Cobalt (2,3,4) ; Lead (2,4) ; Chlorine (1,3,5,7) ; etc.


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