What is a solute? A. The mixture of one substance dissolved in another
B. The substance that dissolves another substance
C. The substance that is dissolved in another substance
ОО
D. The remaining substance that does not become dissolved
SUBMIT

C. The substance that is dissolved in another substance

Explanation:

a solute is a substance dissolved in another substance, known as a solvent

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.