PLEASE I NEED HELP A student uses the periodic table to map out the trend in increasing atomic radii. During peer feedback, a student mentions that her trend is incorrect. Which model and explanation should the student use to help the student understand?

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line