Question

What is called Valency?​

Answer 1

Answer:

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell. Group number.

Explanation:

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Answer 2

The number of electrons left in the last shell (valence shell) is called the valency of the element.

For example- Mg , it atomic number is 12

It electronic configuration: 2,8,2

It needs 6 electrons in last shell to complete it’s octet

So it’s valency becomes 2


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