The shroud of turin was subjected to carbon-14 dating in 1988. The results showed that the shroud of medieval origin, between 1260 and 1390 AD, with more than 95% certainty. Calculate the activity of the carbon in the shroud.

it would be a gas formation

give me abc and i will get it for u.

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.