How we find valency of an …
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Posted by Ritesh Yadav 5 years, 5 months ago
- 2 answers
Yogita Ingle 5 years, 5 months ago
To find the valency of an element, it is absolute that we must know the atomic number of that element.
For example, for the element Carbon
the atomic number is 6
Convert into electronic configuration:. 2, 4
Consider the final shell alone. Here 4 so Subtract 4 from 8
the answer is 4.
Thus, the Valency is 4
For elements with valence electrons 4 and <n4 the Valency is the valence number itself. For example Lithium the valence shell is 1. So Valency is 1️
For elements with valence electrons >4, subtract it from number 8. For example Fluorine the Valency is 2,7 and the valence shell numner is 7. Subtracting from 8 we get 1. so Valency is 1
For elements in the Oxygen group, it is not the same. For example Oxygen has 2,6 . But the valence can be 6 or 2 according to the situation.
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Kalpana Shekhawat 5 years, 5 months ago
1Thank You