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Nitrogen = 3 unpaired electrons.

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Q: Which of the first 20 elements has the most unpaired electrons?
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What are the similarities between groups 3 through 12?

These elements to transition metals. The electrons are filled in the d-orbitals. Most of the elements have unpaired electrons and hence are paramagnetic.


Why nitrogen is trivalent elements?

Because it contain 3 unpaired electrons in its outer most orbit which incolve in bond formation


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