Sonya reads the element riddle below. I am shiny. I form +1 ions. There’s more!
I am the most reactive metal in Period 4.
Who am I?

Which element is the answer to the riddle?

krypton
potassium
sodium
bromine

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

Which of the following electromagnetic waves can create ions?

Which statement best describes the flow of energy in this scenario