How many neutrons does element x have if it’s atomic number is 28 and it’s mass number is 81?

Well let’s put it this way. To find the neutrons you subtract the atomic atomic Nuremberg from the atomic mass. So

Mass=81-Number=28

81-28=53

Final answer is 53.

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.