shapes of molecules (basics)

Question 1

angle of a linear molecule

Answer 1

180

Question 2

angle of a trigonal planar molecule

Answer 2

120

Question 3

angle of a tetrahedral molecule

Answer 3

109.5

Question 4

angle of a trigonal bi pyramidal molecule

Answer 4

120/90

Question 5

angle of an octahedral molecule

Answer 5

90

Question 6

what effect does each lone pair have on the angle of bonding groups?

Answer 6

decreases the angle by 2.5 for each lone pair added