Ch. 4 Arrangement of Electrons in Atoms

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Presentation transcript:

Ch. 4 Arrangement of Electrons in Atoms TABLE 4 – 2 (pg. 104) Principal Quantum Number Main Energy Level (1-7) Orbital Quantum Number Sublevels  S, P, D, F S = 1 orbitals  2 electrons P = 3 orbitals  6 electrons D = 5 orbitals  10 electrons F = 7 orbitals  14 electrons

Energy Level #1 (N = 1) 1 sublevel  s 2 electrons Energy Level #2 (N = 2) 2 sublevels  s & p 2 + 6 = 8 electrons Energy Level #3 (N = 3) 3 sublevels  s, p, & d 2 + 6 + 10 = 18 electrons Energy Level #4 (N = 4) 4 subleverls  s, p, d, & f 2 + 6 + 10 + 14 = 32 electrons

Orbital Notation – uses symbols to represent the number of electrons in each sublevel. Arrows represent the electrons. Electron–configuration Notation – uses superscripts to represent the number of electrons in each sublevel orbital No superscript represents no electrons present in the sublevel. Long hand vs. Short hand Electron–dot Notation – shows the elctrons in the outer most or highest energy level.