An element has three stable isotopes. One has a mass number of 63 and an abundance of 50%. The second has a mass number of 65 an
d an abundance of 30%. The third has a mass number of 67 and an abundance of 20%. Calculate the relative atomic mass of this element. Give your answer to one decimal place.
During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. During this process, radiant energy is released.