The valency of the compound is 1 and 1.Some formulas through which we can make compounds by knowing the valency of their elements are as follows: Hydrogen Chloride Hence, the valency of vanadium are 2,3,4 and 5.įormulas of Compounds by Valence Electrons.Its electronic configuration is Ar 3d 3 4s 2.It is a transition element and most of these show variable valences.It will gain 3 more electrons to complete its octet.Its electronic configuration is 2, 8, 5.
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If there are 1, 2, or 3 electrons in the outermost shell, it will lose these electrons to complete its octet.Another way to calculate the valence electron is by determining the electronic configuration of an element.įor Electronic configuration, we have to check the outermost shell of an electron in the following ways:.With the help of group numbers, we can easily calculate the number of valence electrons of an element.Valence electrons can be determined by checking the vertical column of the periodic table.The structure of these elements could be much better. The electrons of these groups can be determined easily, but they are difficult to predict. It can be found in all elements, even if they are from Group 3 to Group 12. Valence electrons can easily be determined with the help of the periodic table.