QUIZ 1. What is the first orbital filled at every level? a. s b. p c. d d. f Answer: a. The s orbital, and the only orbital in a hydrogen or helium atom, is the first orbital filled. This is a spherical orbital and is at the lowest energy level. 2. Which is not an orbital name in understanding the orbitals around atomic nuclei? a. p b. d c. e d. f Answer: c. The orbitals in the atoms that have been discovered thus far only go up to the following, in order: s, p, d, and f. There is no e orbital. 3. What charge is seen on an electron that has an up-spin? a. +1 b. -1 c. +1/2 d. -1/2 Answer: c. An up-spin for an electron is a spin of +1/2, while a downspin electron has a spin of -1/2.
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