Question

Which property increases with increasing atomic number for both the alkali metals and the halogens?

Answer 1

To answer this question,you must be knowledgeable on periodic trends. When the atomic number increases, that means that the trend of the property must increase both across the period and down a group. The alkali metals are the elements in the leftmost column, while the halogens are the second-to-the-last column. From the periodic trends shown in the picture, the property must be atomic radius.