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Leaving certificate higher level atomic chemistry
Two bond pairs and zero lone pairs
Linear 180 degrees
Three bond pairs and zero lone pairs
Trigonal planar 120 degrees
Four bond pairs and zero lone pairs
Tetrahedral 109.5 degrees
Three bond pairs and one lone pair
Pyramidal 107 degrees
Six bond pairs and zero lone pairs
Octahedral 90 degrees
Three bonding regions zero lone pair
Trigonal planar 120 degrees