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Methods of predicting the arrangement and location of electrons in atoms Electron Arrangement.

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Presentation on theme: "Methods of predicting the arrangement and location of electrons in atoms Electron Arrangement."— Presentation transcript:

1 Methods of predicting the arrangement and location of electrons in atoms Electron Arrangement

2 A. Lewis Dot Structures zvalence electrons – e – in an atom’s outermost orbitals (in highest energy level) available for bonding; determine the chemical properties of an element zelectron-dot structure – consists of element’s symbol surrounded by dots that represent the atom’s valence e –

3 © 1998 by Harcourt Brace & Company s p d (n-1) f (n-2) 12345671234567 6767 B. Electron Congifuration

4 C. Johannesson S 16e - Valence Electrons Core Electrons 1s 2 2s 2 2p 6 3s 2 3p 4 C. Notations zLonghand Configuration

5 zShorthand Configuration yGo up one row and over to the Noble Gas. yFill in the remaining e - in each sublevel like normal. S16e - [Ne] 3s 2 3p 4

6 [Ar]4s 2 3d 10 4p 2 zExample - Germanium

7 White Board Examples zHelium (He) zFluorine (F) zNitrogen (N) zAluminum (Al) zSulfur (S)

8 Homework zDo the Lewis dot structure and long and short hand electron configuration for the following elements: yMagnesium (Mg) ySilver (Ag) yGold (Au) yBromine (Br) yEuropium (Eu)

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