# The set of elements that differ in mutual relationship from those of the other sets is :

Question:

The set of elements that differ in mutual relationship from those of the other sets is :

1. $\mathrm{Li}-\mathrm{Mg}$

2. $\mathrm{B}-\mathrm{Si}$

3. $\mathrm{Be}-\mathrm{Al}$

4. $\mathrm{Li}-\mathrm{Na}$

Correct Option: , 4

Solution:

$\mathrm{Li}-\mathrm{Mg}, \mathrm{B}-\mathrm{Si}, \mathrm{Be}-\mathrm{Al}$ show diagonal relationship but $\mathrm{Li}$ and $\mathrm{Na}$ do not show diagonal relationship as both belongs to same group and not placed diagonally.