Arrange the following elements in order of increasing (from smallest to largest) atomic size: K, O, Cs, Se. Explain the reasoning behind your chosen order. Do not simply restate the trend, but rather explain why the trend exists.

Respuesta :

They’re going to increase in atomic size based on how many electrons they have. You should be able to look at a periodic table or just look up how many electrons each of them has and then you can put it in that order