Molecule shapes

Frage	Antworten
Increase in shell number n effect on S-orbital	Greater the S orbital radius
Increase in shell number n effect on p-orbital	Further p orbital is from nucleus
What sub-shells are present in shell 3?	3s,3p,3d
Within a sub-shell, all orbitals have the same ___	Energy
Explain shape of CH4	4 pairs of bonded electrons around central carbon atom Repel each other, arrange themselves as fair in space to minimise repulsion Form a tetrahedral arrangement 109.5'
Explain shape of NH3	3 bonded pairs of electrons repel lone pair of electrons, lone pairs repel more strongly than bonded pairs reduces bond angle between bonded electrons by 2.5' 107., pyramidal
Draw a table of molecular shapes (8) bond angles name electrons	linear 180' Trig. planar 120' Tetrahedral 109.5' Pyramidal 107' Bent 104.5' Trigonal bipyramidal 90+120' Octahedral 90' Square planar 90'

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