What advantage does a heterogeneous catalyst provide over a homogeneous catalyst in industrial processes? a. a heterogeneous catalyst provides a higher reaction rate. b. a heterogeneous catalyst can be easily separated from reactants. c. a heterogeneous catalyst raises the activation energy higher. d. a heterogeneous catalyst provides an alternate reaction pathway.

B, a heterogeneous catalyst can be easily separated from reactants

Explanation:

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.