NURSING ANM AND GNM

Detailed explanation-1: -The correct answer is (b) oxygen. On the periodic table, electronegativity increases upwards and to the right. Oxygen is located the highest and most right on the table of the elements listed.

Detailed explanation-2: –Therefore Fluorine has high electronegativity among the given elements.

Detailed explanation-3: -Nitrogen is more electronegative than phosphorus as nitrogen and phosphorus lie in the same group and we know that electronegativity decreases down the group due to the increase in the distance between the nucleus and the valence shell which decreases the attraction of the electron pair.

Detailed explanation-4: -Thus, fluorine is the most electronegative element, while francium is one of the least electronegative.

Detailed explanation-5: -The element nitrogen is more electronegative than the element beryllium because nitrogen has a greater number of protons and hence an effective nuclear charge that more strongly attracts the bonding electrons, or answer choice (B).