draw a Lewis structure and number the central atoms RnCl4

To draw the Lewis structure for RnCl4, we first start by determining the total number of valence electrons in the molecule. Radon (Rn) is in group 18 of the periodic table, so it has 8 valence electrons. Chlorine (Cl) is in group 17, so it has 7 valence electrons each. There are 4 chlorine atoms, so the total number of valence electrons will be:

8 (Rn) + 4 (7 from each Cl) = 36 valence electrons

Next, we arrange the atoms, with radon as the central atom bonded to the four chlorine atoms. Once we have drawn our initial Lewis structure, we can manipulate the bonds as needed to satisfy the octet rule for each atom.

In the Lewis structure for RnCl4:

- Radon will be the central atom, with 4 chlorine atoms bonded to it.
- Each chlorine atom will form a single bond with radon.
- The remaining valence electrons will be placed around the atoms to satisfy the octet rule.

The Lewis structure for RnCl4 should look like this:

Cl
|
Cl-Rn-Cl
|
Cl

In this structure, radon is the central atom, and each chlorine atom is bonded to it. Radon has a full octet (8 electrons), while each chlorine atom has 8 electrons as well.