Match the chemical reactions with their properties 1. neutralization
2. combustion
3. synthesis
4. decomposition
5. replacement

a. the reaction has at least two reactants and one product

b. the reaction has one reactant and at least two products

c. oxygen is one of the reactants and a large amount of energy is released

d. one or more atoms replaces a part of a compound

e. the products are always salt and water

hope this !

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.