Each of the pictures (a)–(d) represents one of the following substances at 25 °C: sodium, chlorine, iodine, sodium chloride. Which picture corresponds to which substance? (a)

Video transcript

Hey everyone, we're asked to identify the following picture at 25°C corresponds to potassium chlorine, bromine or potassium bromide first. Let's go ahead and determine how our molecular diagrams would look like for each of these. Starting with our potassium, this will be in its pure solid form, so it will be arranged in an array. Now thinking about florin, flooring will exist as a dye atomic gas for bro mean this will exist as a di atomic liquid and lastly for potassium bromide. Yeah, this will exist as an ionic solid. So this will be arranged in an array. Now looking at our descriptions and our diagram, it looks like we have a di atomic molecule. And since these molecules are floating around, it looks like our best answer here is going to be flooring since it exists as a di atomic gas. Now, I hope this made sense. And let us know if you have any questions.