Question

Arrange the elements according to atomic radius ar, mg, al, cl, na, p, s, si

Answer 1

The atomic radius generally decreases across a period and increases down a group on the periodic table.

Step-by-step explanation:

The atomic radius refers to the size of an atom. It is defined as half the distance between the nuclei of two atoms that are bonded together. Atomic radius generally decreases across a period (row) from left to right on the periodic table and increases down a group (column).

Based on this trend, we can arrange the elements according to increasing atomic radius:

1. Cl (Chlorine)
2. S (Sulfur)
3. Si (Silicon)
4. P (Phosphorus)
5. Al (Aluminum)
6. Mg (Magnesium)
7. Na (Sodium)
8. Ar (Argon)

So, the correct arrangement of the elements according to increasing atomic radius is: Cl, S, Si, P, Al, Mg, Na, Ar.