The correct answer to the question is Option A. Increase
Electronegativity is simply defined as the tendency of an atom to attract electron(s) to itself.
Non-metals has a higher Electronegativity than metals because they have higher valence electrons than metals.
Metals can easily lose their valence electron(s) whereas non-metals gains electron(s)
Beryllium, Be is a metal and Nitrogen, N is a non-metal. This simply means that nitrogen will have a higher electronegativity than beryllium.
Therefore, moving from beryllium to nitrogen, the electronegativity will increase.
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