Question

why nitrogen has valency both 3and5​

Answer 1

Answer:

bcz it can both donate or take from others.z

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Answer 2

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Nitrogen has 7 electrons out of which 5 electrons are in the outermost or Valence shell. It has 2 electrons in its 2s orbital and 3 electrons in its 2p orbital. So nitrogen in its ground state can have a valency 3 and it can also have 5 valency in its excited state. So valency of nitrogen is either 3 or 5.