What problem would a person have if the nucleic acid in one of his or her cells was damaged?
A. That cell could not perform photosynthesis.
B. That cell could not join monosaccharides,
O C. That cell could not contain carbohydrates.
D. That cell could not produce certain proteins.
SUBMIT

there are two significant figures.

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.