Answer:
Uranium must be purified before it is used as a fuel source
Explanation:
The purer the uranium sample, the more the concentration of uranium in the fuel is.
Whenever uranium is extracted from nature, it contains a lot of impurities. Only a few special nuclear reactors can utilize uranium in this raw state. most of the others have to get uranium to become about 3% pure before they begin using it.
To do this, uranium has to be passed through a series of chemical reactions all with the aim of extracting the other compounds that may be present in the fuel.
Because its only representing the most stable isotope of that element but its considered the atomic mass and not average atomic mass
Hope you understand how to work out those types of questions now xD ;)
Explanation:
sodium atom is neutral while sodium ion is a charged specie with a charge of +1
