Question

What is meant by valency and valence electrons differentiate with the help of example

Answer 1

Answer:

1.Valence electrons, then, are electrons in the outermost shell of the atom that determine an atom's or group's ability to bond with others. In chemistry, a group refers to two or more atoms that are specifically arranged.

2.Valency is defined as the combining capacity of the element. It is determined by the number of valence shell electrons present in the atom. If the number of valence electrons is less than or equal to 4 so the valency is the same as the number of electrons present.

Answer 2

Answer:

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The number of bonds an atom can form within a molecule is known as covalency. It is the maximum number of covalent bondsthan an atom can form using its empty orbitals. For example, covalency of carbon is 4. Valency is the number of electrons will lose or gain in order to make itself stable and attain a configuration. Valency may or may not be equal to the number of valence electrons. Whereas, covalency depends on the number of valance electrons. Covalency is defined for elements that form covalent bonds whereas valency is used for covalent and ionic bonds.

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