Orbitals and electronic configuration Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. What is the electronic configuration of a calcium atom (atomic number 20)?
- A. 1s²2s²2p⁶3s²3p⁶3d²
- B. 1s²2s²2p⁶3s²3p⁶4s²
- C. 1s²2s²2p⁶3s²3p⁴4s²
- D. 1s²2s²2p⁶3s²3p⁶4s¹3d¹
2. How many unpaired electrons are there in an oxygen atom (1s²2s²2p⁴)?
- A. 4
- B. 1
- C. 3
- D. 2
3. Which is the configuration of Cu (atomic number 29)?
- A. [Ar]3d⁹4s²
- B. [Ar]3d¹⁰4s²
- C. [Ar]3d⁹4s¹
- D. [Ar]3d¹⁰4s¹
4. The shape of a p orbital is
- A. spherical
- B. dumbbell-shaped
- C. a ring
- D. the same as an s orbital
5. What is the configuration of the Zn²⁺ ion (Zn is atomic number 30)?
- A. [Ar]3d¹⁰
- B. [Ar]3d⁸4s²
- C. [Ar]3d¹⁰4s²
- D. [Ar]3d⁹4s¹