Can you help me please this is hard?

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

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.