Families in the periodic table have similar properties because they have the same number of valence or outermost electrons. for representative elements, or group a elements, the group number indicates the number of valence electrons. compare the valence electron configuration of the noble gas elements seen here. what statement is correct? a) s2p8. b) s2p6. c) s2p5 d) s4p4

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on