1) Draw the mechanism for the cyclization of aspartame. 2) The intentional cyclization of aspartame in this experiment is an example of derivatization. Explain what derivatization is, and describe why chemists use this methodology. Derivatization has become a much less common practice than it once was, particularly for organic chemists. What technology has largely replaced derivatization

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

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.