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Valence describes how easily an atom or radical can combine with other chemical species. The number of bonds that an atom can form as part of a compound is expressed by the valency … But the valency of nitrogen molecule as whole is zero. Nitrogen has 5 electrons in its n=2 (outer) shell. NH3, for instance, is an example of nitrogen bonding covalently with three hydrogens (which each have one valence electron) to give the nitrogen a full eight electron in its valence shell. This is determined based on the number of electrons that would be added, lost, or shared if it reacts with other atoms. Valency … The Nitrogen valences Ranging from -3, as in ammonia and amines, to +5 as in nitric acid (Tyagi, 2009). We say that nitrogen has a valency of 3, meaning that it wants three more electrons in its outer shell. Valency Chart - The charge on the ions formed by an element is called the valency of that element. This element does not expand valencies like others. The valency of nitrogen atom in N 2 molecule is three. According to those fundamental conceptions of valency which are based on the numbers of elements which combine with one another to form stable compounds, the elements nitrogen, phosphorus, arsenic, antimony, and bismuth possess the well-defined valencies of 3 and 5, which have been already illustrated by typical compounds. The nitrogen atom is a chemical element with atomic number 7 and the first element of group 15 (formerly VA) of the periodic table. Five The number of valence electrons is the number of electrons in the outer shell, that the atom uses for bonding. Since, it is participate in the formation three bonds. Nitrogen is in Group 5, so it has 5 outer shell electrons. The words valence and valency have two related meanings in chemistry. Covalency of nitrogen: one atom of nitrogen shares 3 electrons to achieve the nearest inert gas electronic configuration, therefore, the covalency of nitrogen is 3. 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