University:
Georgia Southern University
Course:
CHEM 1310 | Comprehensive General Chemistry
Academic year:

2024
Views:

489

Pages:

1
Author:

Jalen W.

Electron Configurations - KEY Note: The electron configurations in this worksheet assume that lanthanum (La) is the first element in the 4f block and that actinium (Ac) is the first element in the 5f block. If your periodic table doesn't agree with this, your answers for elements near the f-orbitals may be slightly different (one more/less electron for the f- orbital). sodium 1s22s22p63s¹ iron 1s22s22p63s²3p 4s²3d bromine 1s22s22p63s²3p 4s²3d104p5 barium 1s22s22p 3s²3p 4s²3d104p5s24d105p6s2 neptunium 1s22s22p 3s²3p 4s²3d104p5s24d15p 6s24f15d106p7s2515 also might be written (due to the close energy of d and fand similarities of elements versus predictable memorized config: 1s22s22p63s²3p4s²3d104p5s24d105p6s24f145d106p7s² 6d15f" [Ar] 4s²3d7 cobalt [Kr] 5s24d silver tellurium [Kr] 5s24d105p [Rn] 7s2 radium lawrencium [Rn] 7s25f46d¹ also might be written (due to the close energy of d and f and similarities of elements versus predictable memorized config: [Rn] 7s26d15f14 1s22s22p 3s²3p sulfur 1s22s22p 3s²3p 4s²3d104p 5s¹ rubidium [Kr] 5s24d105p³ antimony [Xe] 6s24f15d osmium [Rn] 7s25f" einsteinium note: no d's, so the p. table referenced has Ac as 5t' 1s22s22p63s²3p 4s24d104p" not valid (take a look at "4d";must be 3 d not 4!) 5 1s22s22p 3s 3d not valid (3p comes after 3s); also no 3 electrons in S [Ra] 7s25f not valid (radium isn't a noble gas) [Kr] 5s24d105p5 valid [Xe] not valid (an element can't be its own electron configuration)