Question

    The behaviour of lithium is similar to that of magnesium. This sort of similarity is commonly referred to as:

    A same Zeff Correct Answer Incorrect Answer
    B inert pair effect Correct Answer Incorrect Answer
    C isoelectronic species Correct Answer Incorrect Answer
    D diagonal relationship Correct Answer Incorrect Answer

    Solution

    The behavior where lithium (an alkali metal) shows similarities with magnesium (an alkaline earth metal) despite being in different groups of the periodic table is referred to as a " diagonal relationship" in the periodic table. This phenomenon is observed in the second period elements where they show similarities with the elements diagonally located in the third period.

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