Solve: The following question in the picture

D is the answer to your question in my opinion

I think it is option A

Explanation:

XY 2 will be three molecules which is only a or b. As molecules are usually in a ddiagr like a, I would go with option a

hurricanes form in warm water

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.