PLEASE ANSWE

A student claims that a magnetic field can affect objects that are not in direct contact with each other. Which argument best supports the students claim?

A. A lighting bolt releases a charge from the sky to the ground.
B. A light bulb becomes hot to the touch after being lit.
C. A ball rolls downhill and eventually comes to a stop.
D. A compass needle points to the north from any location.

football

explanation:

because it is

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.