Which of these periods contain elements with electrons in's. p, d, and forbitals? OA periods 1-3
OB. periods 1-4
OC. periods 3-5
OD. periods 6-7

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.

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?