On the basis of individual bond polarity and ori-
entation, determine whether each of the follow-
ing molecules would be polar or nonpolar:
a. h2o
b. 12
c. cf4
d. nhz
e. co

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

i think its 100

i hope this !