Question

as atoms in group 15 are considered in order from top to bottom, the electronegativity of each successive element.... increases decreases remains the same none of the above

Explanation:

In the periodic table, for elements in the same group (like Group 15), as we move from top to bottom, the atomic radius increases. Electronegativity is the tendency of an atom to attract electrons. With an increase in atomic radius, the effective nuclear charge experienced by the outermost electrons decreases, so the ability to attract electrons (electronegativity) decreases. So for Group 15 elements from top to bottom, electronegativity decreases.

Answer:

B. decreases