Q. 2.87 - An Introduction to General, Organic, and Biological Chemistry

Question

Match the spheres A through D with atoms of LI, Na, K, and Rb. $\left(4.7\right)$

Step-by-Step Solution

Answer

The match of spheres  with the atoms is  $B$is $Rb$, $C$ is $K$, $A$is $Na$ and $D$ is $Li$. 

Step 1: Given Information

We need to find the  match the spheres A through D with atoms of LI, Na, K, and Rb.  

Step 2: Explanation

Li, Na, K, and Rb all the elements are in a group $1A$ and different periods. In the periodic table size of elements increases when we go down the group. So the order of size is - $\mathrm{Li}<\mathrm{Na}<\mathrm{K}<\mathrm{Rb}$. And we can see by observing the image, the sequence of spheres is $D<A<C<B$.

So, from the sequence the largest sphere is $B$, so this is of $Rb$. And following the sequence sphere  $C$is of $K$, sphere $A$ is of $Na$ and  sphere $D$ is of $Li$.