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What is valency?
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Answers
Valency is the number of electrons at its outermost shell or its atomic charge, some elements have several charge like sulfur it has -2, +4, +6 And nitrogen +5 , -3 . the negative charge means the elements wants how many more electrons to fill its shell like nitrogen it has -3 so it still needs 3 electrons. The positive charge means how many electrons it wants to lose like sodium it has a charge of +1 so it wants to loses i electrons.
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Answer:
the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecule
Explanation:
The valency of an element is the number of hydrogen atoms that can combine with or replace (either directly or indirectly) one atom of the element. ... For example, oxygen has six valence electrons, but its valency is 2. Some elements may have more than one combining power (or valency), while others have just one.