Question

The alkaline earth metal family element that has the largest atomic radius can be found in which period on the periodic table?

a)

7


b)

1


c)

2


d)

6

Answer 1

The alkaline earth metal with the largest atomic radius is found in period 7 of the periodic table, and the element is radium (Ra).

Step-by-step explanation:

Alkaline Earth Metals and Atomic Radius

The alkaline earth metal family is located in Group 2 of the periodic table. These elements each have two s electrons in their outer shell, and their atomic size increases as we move down the group. The largest atomic radius within the alkaline earth metals would therefore belong to the element found in the lowest period of this group. Based on the options provided, the correct answer is period 7, as radium (Ra) is the heaviest alkaline earth metal and is located in period 7. It has the largest atomic radius among the alkaline earth metals.

Radium (Ra) is the largest alkaline earth metal due to its position on the periodic table, which corresponds to the highest number of electron shells among group 2 elements. This property follows the trend that atomic radius increases with increasing number of electron shells, which occurs as you move down a group in the periodic table.

Answer 2

c. 2

Step-by-step explanation:

The alkaline earth family is the second most reactive group, and it's elements can't be found free in nature. They are called "alkaline" earth metals because they form "alkaline" solutions, hydroxides, when they react with water