Shapes of Molecules Thermochemistry NCEA Level 3

Two regions of negative charge on central atom and no lone pairs

Linear

Three regions of negative charge, two bonding and one lone pair

Bent

Four regions of negative charge, two bonding and two lone pairs

Bent

Three regions of negative charge on the central atom, all bonding and no lone pairs

Trigonal Planar

Four regions of negative charge on the central atom, three bonding and one lone pair

Trigonal Pyramid

Five regions of negative charge on the central atom, three bonding and two lone pairs

T-Shaped

Four regions of negative charge on the central atom, all are bonding with no lone pairs

Tetrahedral

Five regions of negative charge on the central atom, four bonding and one lone pair

See-Saw

Six regions of negative charge on the central atom, four bonding and two lone pairs

Square Planar

Five regions of negative charge around the central atom, five bonding and no lone pairs

Trigonal Bipyramidal

Six regions of negative charge around the central atom, five bonding and one lone pair

Square Pyramid

Six regions of negative charge around the central atom, six bonding and no lone pairs

Octahedral