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Our electron configuration worksheets provide focused practice determining configurations for atoms and ions. These worksheets are ideal for students studying quantum theory in high school or college introductory chemistry.
Trigonal planar or trigonal pyramidal? Explore our table of common electron geometries with bonding domains, bond angles, and formulas. Lone pairs repel other electron domains more than bonds do (~2.5° per lone pair). For example: H-C-H angle ~ 109.5°. H-N-H angle ~ 107°. H-O-H angle ~ 104.5°.
Molecular Geometry Chart # of Electron Groups Number of Lone Pairs Electron Pair Arrangement Molecular Geometry Approximate Bond Angles 2 0 linear 180° 0 trigonal planar 120° 1 3 bent <20° 0 tetrahedral 109.5° 1 trigonal pyramid 4 <109.5° (~107°) 2 bent <109.5°(~105°) 0 trigonal bipyramidal 9 0°,12 1 see-saw <9 0°,<12
An electron configuration is a method of indicating the arrangement of electrons about a nucleus. A typical electron configuration consists of numbers, letters, and superscripts with the following format: 1. A number indicates the energy level (The number is called the principal quantum number.). 2. A letter indicates the type of orbital; s, p ...
How to write an electron configuration: A. Determine the total number of electrons to be represented. B. Use the Aufbau principle to fill the orbitals with electrons for elements 1-23.
Electron Configurations - Solutions 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.
Electron Configuration Worksheet 1. Provide Aufbau diagrams. There is a bigger diagram on the last page. Bonus: Write out the electron configurations for elements 1-21.
