Which correctly describes elements in the same group? select one: a. they have the same atomic radius. b. they have the same number of valence electrons. c. they have electrons in the same outermost energy level. d. they must be in the same state of matter?

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as

Find the missing probability in the table below a.0.10 b.40 c.0.80 d. 0.20