AP Chemistry Shapes

strong acids

HCl, HBr, HI, HNO3, HNO4, HCLO3, HCLO4

strong bases

alkali metals (1st column), heavier alkali earth metals (Ca, Sr, Ba), Group 1A metals and CBS

2 groups of electrons

linear, symmetrical, 180 degrees

3 groups of electrons

trigonal planar, 120 degrees, symmetrical

3 groups of electrons, 1 lone pair

bent, 120 degrees, polar

4 groups of electrons

tetrahedral, symmetrical, 109.5 degrees

4 groups of electrons, 1 lone pair

trigonal pyramidal, polar, 107.5 degrees

4 groups of electrons, 2 lone pairs

bent, polar, 105.5 degrees

5 pairs of electrons

trigonal bipyramidal, symmetrical, 120 degrees in plane and 90 below

5 pairs of electrons, 1 lone pair

seesaw, polar, 120 degrees in plane and 90 below

5 pairs of electrons, 2 lone pairs

T-shaped, polar, 120 degrees in plane and 90 below

5 pairs of electrons, 3 lone pairs

linear, symmetrical, 120 degrees in plane and 90 below

6 groups of electrons

octahedral, symmetrical, 90 degrees

6 groups of electrons, 1 lone pair

square pyramidal, polar, 90 degrees

6 groups of electrons, 2 lone pairs

square planar, symmetrical, 90 degrees

6 groups of electrons, 3 lone pairs

T-shaped, polar, 90 degrees

6 groups of electrons, 4 lone pairs

linear, 90 degrees