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  4. Which of the following pairs of elements show diagonal relationship? 1. Li and Mg 2. B and Si 3. Mg and Al Select the correct answer using the codes given below

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Q. Which of the following pairs of elements show diagonal relationship?
$1.$ Li and Mg $2.$ B and Si $3.$ Mg and Al
Select the correct answer using the codes given below

NTA AbhyasNTA Abhyas 2022

Solution:

The first element of a group (elements of second row) often show resemblance with the second element of the next group.
Solution
This similarity arises because of their comparable (i) electronegativities, (ii) ionization energies, (iii) polarizing powers (charge/radius ratios).