Draw the Lewis structures for the following molecules and ions and tell which do not follow the octet rule.
`F_2 , PH_3 ,H_2 S, SiCl_4 , C_3 H_8 ,F_2 O , Na^(+) , Cl^(-)`

Explanation

To draw the Lewis structures for the given molecules and ions, we will follow these steps for each compound or ion:

### Step 1: F₂ (Fluorine gas)
1. Each fluorine atom has 7 valence electrons.
2. Two fluorine atoms share one pair of electrons to form a single bond.
3. The Lewis structure is:
```
F: F
...