I am thinking of an unreactive nonmetal and Aisha suggested I use bromine. Is this a good choice? Explain your reasoning. If not which nonmetal would you suggest?

Aspherical ball of charged particles has a uniform charge density. in terms of the ball's radius r, at what radial distances inside and outside the ball is the magnitude of the ball's electric field equal to 14% of the maximum magnitude of that field? a)inside the ball: b) outside the ball: