00:01
First of all, let's have a look what all is given in the problem.
00:05
Given is some of the elements are given.
00:09
The elements that are given is calcium, strontium, calcium, calcium, sulfur, neon, silicon and germanium.
00:25
These are the six elements that are given and what we are supposed to find out is we need to arrange them.
00:32
In their decreasing order of atomic radius.
00:36
So we need to arrange them in their decreasing order of atomic radius.
00:42
Decreasing order of atomic radius.
00:52
So before moving on, let's understand a basic trend that is followed.
00:57
As we move across the period, atomic radius decreases because electrons are added to the same shell and effective nuclear charge increases.
01:08
So as we move across the period, atomic radius decreases.
01:18
But as we go down the group, the electrons are added to the new shell and the effective nuclear charge also decreases.
01:27
So the atomic radius will increase.
01:31
So the atomic radius increases...