Using the Periodic Table, which of the following groups of elements has the smallest atomic number in Period 4?

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

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?

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.