The table below shows the average temperatures of the crust, the mantle, and the outer and inner core of Earth arranged randomly: Average Temperature of Layers Unknown Layer
Average Temperature (°C) A 4,500 B 1,300 to 2,500 C 5,000 D 0 to 1,300 Which layer is most likely the mantle?

someone please help 10 points science

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

idk what is it? is this a question that you know the answer or u dont

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.