Which of the following statements about ionization energy is true? a. ionization energy is the amount of energy used to add an electron to an atom. b. elements toward the bottom of a group periodic table generally have higher ionization energies than elements at the top of the group. c. in a period, elements farther to the right generally have lower ionization energies than elements on the left. d. potassium has a lower ionization energy than sodium.

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?

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore