Question

What do you mean by valency ? Illustrate with suitable examples .

Answer 1

Valency is defined as the combining capacity of an element. For example, the valency of Hydrogen is 1 as it has one electron in its outermost shell and requires one electron to become stable. ... For example, Iron (Fe) can have a valency of 2 and 3

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Answer 2

Answer:

The number of electrons which the element can gain or lose to have stable electronic configuration is known as its valency.

For example::

Electronic configuration of Oxygen is 2,6

so oxygen can have stable electronic configuration only when it takes 2 electrons from any other element.

So the valency of Oxygen is -2 or 2-

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