Electron Configurations - Solutions worksheet for Honors Chemistry, displaying completed electron configurations for elements like sodium, iron, bromine, and others.

1. sodium [Ne] 3s¹
2. iron [Ar] 4s² 3d⁶
3. bromine [Ar] 4s² 3d¹⁰ 4p⁵
4. barium [Xe] 6s²
5. neptunium [Rn] 7s² 5f⁴ 6d¹
6. cobalt [Ar] 4s² 3d⁷
7. silver [Kr] 5s¹ 4d¹⁰
8. selenium [Ar] 4s² 3d¹⁰ 4p⁴
9. radium [Rn] 7s²
10. lawrencium [Rn] 7s² 5f¹⁴ 6d¹
11. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹ → lawrencium
12. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s¹ → rubidium
13. [Kr] 5s² 4d¹⁰ 5p³ → antimony
14. [He] 2s² 2p⁵ → fluorine
15. [He] 2s² 2p⁶ 3s² → magnesium
16. [Ne] 3s² 3p⁶ 4s² → calcium
17. [Ne] 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² → barium
18. [Kr] 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹ → lawrencium
19. [He] 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² → radium
20. [He] 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹ → lawrencium