A compound exhibits a peak at 1685 cm-1 in its IR spectrum. Describe how 13C NMR can be used to identify the functional group. a. Amides have a peak around 170 ppm in 13C NMR; esters, 175 ppm
b. Esters have a peak around 175 ppm in 13C NMR; conjugated ketones, 200 ppm
c. Amides have a peak around 170 ppm in 13C NMR; conjugated ketones, 200 ppm
d. Ketones and aldehydes are indistinguishable in 13C NMR

it is a good conductor

explanation:

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.