In the reaction between bromine and sodium, a bromine atom gains an electron. what ion is formed? is the bromine oxidized, or is it reduced?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Connect the whole numbers on the periodic table to indicate what they represent?

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.