IB Chemistry S2.2 Notes

This page contains our IB Chemistry notes for S2.2. By reading each one of these notes, you will fully cover the content for IB Chemistry 'Further covalent bonding'.

All Topic 2 Sub-topics

S2.1: Ionic Bonds & Structure

S2.2: Covalent Bonding & Forces

(HL)S2.2: Further covalent bonding

S2.3: Metallic Bonds

(HL)S2.3: Further metallic bonding

S2.4: Models To Materials

(HL)S2.4: Condensation polymers

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Further VSEPR

You need to know the additional two domains:

Trigonal bipyramidal - 5 electron domains
Octahedral - 6 electron domains

Just as before, the presence of a lone pair will decrease the bond angles by 2.5°, and this effect compounds. However, in some cases the pairs cancel one another and so the bond angles do not decrease.

Linear - electrons are removed from the equatorial plane, so the angle here becomes 180°.
Square planar - electrons are removed from the axial plane, so the angles become 90°.

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