Molecule shape - PowerPoint PPT Presentation

Lewis Structures: 5 steps

Lewis Structures: 5 steps. Count valence e- available If an ANION, add charge to # valence e- If a CATION, subtract charge from # valence e- Draw skeleton Least electronegative atom is the central atom (usually first element in formula, never H)

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Section 5.3—Molecules in 3D

Section 5.3—Molecules in 3D. Bonds repel each other. Bonds are electrons. Electrons are negatively charged. Negative charges repel other negative charges. Bonds repel each other. Molecules arrange themselves in 3-D so that the bonds are as far apart as possible.

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Q1 : a) Write the electron configurations of the following species e.g. Si is [Ne]3s 2 3p 2

*********************************************************************** Chemistry for Engineers Pop-up Quiz Name____________________ Course: NANO / AERO / ADME ID_______________________ *************************************************************************.

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