Answer:
in 6A, oxygen is the most electronegative, and polonium is the least
in the list given, chlorine is the most electronegative
Explanation:
Electronegativity increases across the period and decreases down the group
The elements in group 6A in order are:
oxygen , sulfur , selenium, Tellurium, and Polonium
Oxygen is the most electronegative, Polonium is the least electronegative
From the list given, chlorine is the most electronegative since it has the farthest group to the right