Why do elements in the same group have similar properties? A. Elements in the same group have similar properties as they all have the same number of electrons in their outer shell

B. They all come from the same place.

C. They all come from the same period and have the same number of electron rings

D. They all have the same number of neutrons

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices