A15 year old boy with type one diabetes is aspirated back his regiment a blood glucose monitoring and insulin administration and has told his mother that he wants to scale bith back. which other follow response by his mother is most accurate

d.) circle motion requires a force to give it a centripetal acceleration.

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.