Final answer:
The ground-state electron configuration of nickel (Ni) is 1s2 2s2 2p6 3s2 3p6 4s2 3d8.
Step-by-step explanation:
The ground-state electron configuration of nickel (Ni) can be determined by using the periodic table. Nickel has an atomic number of 28, which means it has 28 electrons. The electron configuration for nickel can be written as: 1s2 2s2 2p6 3s2 3p6 4s2 3d8.