She had brought a portable battery pack with her so she plugged her phone into the battery pack and the music started playing again then Mila finished her run. 1.A halfway through Milas run when the music stopped playing was there energy in Milas phone?what is your evidence

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

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.