A portion of a two-dimensional 'slab' of NaCl(s) is shown here (see Figure 8.2) in which the ions are numbered. (a) Which colored balls must represent sodium ions?

Video transcript

Hi everyone here, we have a question telling us that a portion of a two dimensional cleavage a potassium bromide lattices shown below, which circle represents K. So potassium and bromide are in the same row on the periodic table. The ionic radius increases from left to right. This means that roaming is going to have the larger radius, so we expect potassium to be the smaller circle, and therefore red, And that is our final answer. Thank you for watching. Bye.