Anyone know the answers??
Confused -- I'm sorry

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.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)