Plzz help the answers are in the pic Here is the question- Radar works by sending out electromagnetic energy at a particular wavelength and receiving a reflected signal from distant objects, similar to a sound echo many modern military aircraft have what is known as "stealth technology" that allows the aircraft to be invisible to enemy radar. what statement best explains how this is possible?

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.