Electron Structures and the Periodic Table

TABLE 10.2 I Orbital Diagrams and Electron Configurations for Elements 11-18 

Give the electron configuration for the valence electrons in these elements, (a) B (b) N (c) Na (d) Cl 

We have seen how the electrons are assigned for the atoms of elements 1-18. How do the electron structures of these atoms relate to their position on the periodic table To answer this question, we need to look at the periodic table more closely. 

Take a couple of minutes and spend some time with 

Gray on his websites enjoying the photos and stories of the elements. He has some truly amazing examples of the elements. 

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Electronic structure and the Periodic Table Transition elements... 

Shells, Subshells, and Orbitals Orbital Shape Buildup Principle Electronic Structure and the Periodic Table Solved Problems... 

The energy-ordering scheme (5-58) coupled with the Pauli or exclusion principle and Hund s rule leads us to a simple prescription for building up the electronic configurations of atoms. This aufbau principle is familiar to chemists and leads naturally to a correlation between electronic structure and the periodic table. The procedure is to place all the electrons of the atom into atomic orbitals, two to an orbital, starting at the... 

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