To determine which of the options show the two MOST similar elements according to their placement in the periodic table, we need to consider their groups (columns) and periods (rows):
-
C (carbon) & O (oxygen) - These elements are in the same period (2), but in different groups (14 and 16, respectively). They are somewhat similar due to being in the same period, but they are not in the same group.
-
Li (Lithium) & Be (Beryllium) - These elements are in the same group (1 and 2 respectively) but in different periods (2 and 2), meaning they are both metals and have some similarities in their properties.
-
Mg (Manganese) & Ca (Calcium) - Manganese is located in group 7 and Calcium in group 2, so these elements are not very similar. They are in different parts of the table.
-
Li (Lithium) & Mg (Manganese) - While these two are both metals, they are in different groups (1 and 2) and different periods (2 and 3), so they are not necessarily similar.
Based on their placement:
- Li & Be are the most similar as they are in the same group, both being metals with more comparable chemical behaviors.
The answer is: Li (Lithium) & Be (Beryllium).
1 answer