Question

define valency with example

Answer 1

valency is the combining capacity of an atom
OR
valeny what is the number of electrons gained, lost or shared to have 8 electrons in the outermost shell is called valency.


example:-valency of hydrogen is 1.

Answer 2

Hey!

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===VALENCY ====

Valency is the combining capacity of an element.

◾It is numerically equal to the number of hydrogen atoms that combine with an element.

Example - In methane, four atoms of hydrogen combines with carbon so its Valency is four.

◾It is also numerically equal to the number of chlorine atoms that combine with the atoms of an element.

Example - In magnesium chloride, two atoms of chlorine combines with magnesium so it's Valency is two.

✔️Valency of metals and non-metals

➡️Valency of metal - The number of elections lost by an atom during formation of compound.

➡️Valency of non - metals - The number of electrons gained by an atom during formation of compound.

◾Variable Valency ◾

Some elements show more than one value of Valency in different compounds. These elements are said to possess variable Valency.


For example - In FeO, Valency of Fe = 2.
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Hope it helps you!!

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