which group or period of elements has the largest atomic radius
The atomic radius generally increases from top to bottom within a group in the periodic table. Therefore, the group or period of elements that has the largest atomic radius is the bottommost group in the periodic table, known as Group 1 (alkali metals) or Group 2 (alkaline earth metals). This is due to the addition of new energy levels (shells) as you move down the group, increasing the overall size of the atom.
The atomic radius generally decreases across a period (horizontal row) from left to right in the periodic table, and increases down a group (vertical column). Therefore, the group or period with the largest atomic radius would be the bottom-left corner of the periodic table. Specifically, the elements in Group 1 (also known as the alkali metals) and Period 7 (the bottom row) tend to have the largest atomic radii.
The atomic radius generally decreases from left to right across a period (horizontal row) on the periodic table. However, it increases from top to bottom within a group (vertical column). Therefore, the group or column of elements with the largest atomic radius is the one located at the bottom of the periodic table.
To determine the group with the largest atomic radius, you can simply analyze the periodic table. Look for the group (column) that is located at the very bottom, typically separated from the rest of the table. This group is known as Group 1 or the alkali metals. These elements, such as cesium and francium, have the largest atomic radii among all the elements.