MCAT Chemistry Practice Problem
What is the electron configuration of an ion needed for DNA Polymerase to work properly?
B. [Ne] 3s2
Answer: The ion that acts as a cofactor and is needed for DNA Polymerase to work is Mg2+. It's electron configuration is [Ne] or choice C.
A represents Ca, B represents Mg atom (notice the question asks for an ion), and D represents Zn2+.