Find the valency of sodium nitrate
Answers
Answer:
Valency of (-NO3) is (-1), because last electronic configuration of N is 2s2 2p3 means outer orbit contains 5e- where as oxygen contains 6e- in last orbit but oxygen has more electronegative hence electron pull by oxygen. N has two option either get 3e- or loose 5e- to complete it's octet where oxygen has chance to gain 2e- or loose 6e- to complete octet. Now check possibilities which has more possibility of O and N to complete octet. As we know oxygen has more electronegative hence possibility is to pull e- from N that mean 5e- given by N to O but all 3 oxygen require 6e- to complete octet but N can give only 5e- hence N 5e- are compensate with 5e- oxygen but one negative is left which is -1 charge. Hence NO3 has 1 negative charge….
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