What is a possible set of quantum numbers for the unpaired electron in the following electron configuration: [ar] 3d10 4s2 4p5? a. n=3, ℓ =1, mℓ =−1, ms =+½ b. n=3, ℓ =2, mℓ =−1, ms =−½ c. n=4, ℓ =2, mℓ =−2, ms =+½ d. n=4, ℓ =0, mℓ = 0, ms =+½ e. n=4, ℓ =1, mℓ =−1, ms =+½