Question

The first element of the groups 1 and 2 are different from other members of the respective groups. Their behaviour is more similar to the second element of the following groups. What is this relationship known as?

• A. Anomalous relationship
• B. Periodic relationship
• C. Diagonal relationship
• D. Chemical relationship

Answer 1

Answer: (C)

Diagonal relationship

The similarities (in many of properties) between first element of a group and second element of the next group is called diagonal relationship.

Thus, Li ( first element of group 1) shows diagonal relationship with Mg (second element of group 2).

Also, Be ( first element of group 2) shows diagonal relationship with Al (second element of group 13).

Also, B ( first element of group 13) shows diagonal relationship with Si (second element of group 14).