To predict molecular shape, the VSEPR theory (Valence Shells Electron Pairs Repulsion) can help us. Use balloon for simple prediction of molecular shapes.Make 3 dimension shapes, if possible use different balloon for different atom. Firstly you can make a linear shape. Please give an example of each shape. For example : hydrogen molecule, H2 is linear. Make a table to show each molecule has certain shape. Complete your table with Lewis structure, determine bonding pair (BP) and lone pair (LP) electrons. Firstly think about symmetrical shapes, then unsymmetrical shapes. Mention about their molecular polarities, polar or non polar molecules.
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