what do you understand by covalency? give example
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Covalency of an atom is the number of electron taking part in the formation of shared pairs. thus, the covalency of hydrogen is one, oxygen is 2,nitrogen 3, carbon 4 .
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☛ The number of electron shared by one atom of the element to achieve the nearest inert gas electronic configuration is known as covalency.
- For example:- covalency of is 1 whereas covalency of is 2.
➤ Electrovalency :-
☛ The number of electron loose or gain by one atom of an element to achieve the nearest inert gas electronic configuration is known as. Electrovalency.
- For example :- Electrovalency of NaCl is 1 and Cl is also 1 and electrovalency of aluminium chloride , Al = 3 and Cl = 1
➤ valency :-
☛ Valency is defined as the number of electrons gained ,lost or shared so as to make the octet of electrons in the outermost shell.
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