An atom has 2 protons in its nucleus. which of the following must be true for this atom to have no net electrical charge? question 2 options: a. the atom has 2 negatively charged electrons outside the nucleus. b. the atom also has 2 positively charged neutrons in the nucleus. c. the atom has 2 negatively charged electrons in the nucleus. d. the 2 positive protons have no influence on the overall charge of the atom.

where are the choice options?

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.