Can someone pls help me answer my chemistry hl.

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Which statement describes james chadwick’s discovery.

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?