Which chemical property makes a substance suitable as a fuel? low conductivity low flammability high conductivity high flammability

Option (d) is the correct answer.

Explanation:

A substance which upon burning produces heat, energy or power is known as fuel.

Conductivity is defined as the ability of a substance or solution to conduct electricity. When the substance is able to conduct at a faster rate then it means it has high conductivity.

When a substance is able to conduct electricity slowly then it means it has low conductivity.

Flammability is defined as the ability of a substance to catch fire. When a substance readily catches fire then it is known that it has high flammability. When a substance does not catches fire easily then it is known that the substance has low flammability.

Thus, we can conclude that high flammability is the chemical property which makes a substance suitable as a fuel.

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.