18. Write the ground-state electron configuration for Ni* using the noble gas short-hand. (Be sure to denote the different p/d orbitals of the unfilled subshells). a. Would nickel (Ni) have a larger atomic radius than Ni?+? b. Use the concept of Zetr/shielding to provide a complete chemical explanation for your answer. onan e c. Using the electron configuration you wrote above, explain why Ni?* is more common than Ni' or Ni*.