How would I arrange the following elements in order of increasing electronegativity a. selenium, scandium, copper

b. oxygen, polonium, sulfur

c. cesium, rubidium, francium

Which position represents spring in the southern hemisphere? a) b) c) d)

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

How does the attraction between particles affect the ability of a solvent to dissolve in a substance