Two bond pairs produce a linear shape with a bond angle of 180°; the example is BeCl3.
Three bond pairs produce a trigonal planar shape with a bond angle of 120°; the example is AlCl3.
Four bond pairs produce a tetrahedral shape with a bond angle of 109.5°; the example is CH4.
Five bond pairs produce a trigonal bipyramidal shape with bond angles of 90° and 120°; the example is PCl5.
Six bond pairs produce an octahedral shape with a bond angle of 90°; the example is SF6.
Regular Shapes by Bond Pairs
| Bond pairs | Shape | Bond angle | Example |
|---|---|---|---|
| 2 | Linear | 180° | BeCl3 |
| 3 | Trigonal planar | 120° | AlCl3 |
| 4 | Tetrahedral | 109.5° | CH4 |
| 5 | Trigonal bipyramidal | 90° and 120° | PCl5 |
| 6 | Octahedral | 90° | SF6 |
It covers the core concepts of Regular Molecular Shapes, organized by topic with the key definitions, explanations and takeaways, so it's easier to learn and remember.
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