How many electrons does an atom of bromine need to gain to become more stable?

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?