Select the elements having identical dot notations (the
same number of valence electrons)
selenium, se, atomic #34
phosphorus, p, atomic #15
arsenic, as, atomic #33
nitrogen, n, atomic #7
carbon, c. atomic #6
chlorine, cl, atomic #17

Plz mark brainliest 30 points1) 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?

What are the chemical names of these compounds? ke: mg3n2: reset next

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.