The first element of the groups 1 and 2 are different from other membe...
The relation between 1st element of a group and 2nd element of the next group is called diagonal relationship.
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The first element of the groups 1 and 2 are different from other membe...
Diagonal Relationship
The relationship described in the question is known as a diagonal relationship. This relationship is observed between elements that are located diagonally to each other in the periodic table.
Explanation:
The periodic table is a tabular arrangement of chemical elements, in which elements are ordered by their atomic number, electron configurations, and recurring chemical properties. Elements in the periodic table are organized into groups and periods based on their similar properties and atomic structure.
Groups: The vertical columns in the periodic table are called groups. Elements within the same group share similar chemical properties and have the same number of valence electrons.
Periods: The horizontal rows in the periodic table are called periods. Elements within the same period have the same number of electron shells.
Diagonal Relationship: The diagonal relationship refers to the similarity in properties between elements that are located diagonally to each other in the periodic table. These elements belong to different groups and periods but exhibit similar chemical behavior.
In the given scenario, the first elements of groups 1 and 2 are different from the other members of their respective groups. This is because the first element of group 1 is hydrogen (H) and the first element of group 2 is lithium (Li). Both elements have unique properties compared to the other members of their groups.
However, the behavior of these first elements is more similar to the second element of the following groups. For example, the behavior of hydrogen (H) is more similar to that of the second element of group 17 (halogens) which is chlorine (Cl). Similarly, the behavior of lithium (Li) is more similar to that of the second element of group 12 (transition metals) which is beryllium (Be).
This diagonal relationship can be explained by the similarity in their atomic size, ionization energy, electronegativity, and other properties. Elements located diagonally to each other in the periodic table often have similar atomic structures and electron configurations, leading to comparable chemical properties.
Therefore, the correct answer is option 'C', diagonal relationship.
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