Consider the elements :
Ca, Na, I and F
Identify the elements that exhibits only negative oxidation state.
Identify the element that exhibits only positive oxidation state.
Identify the element that exhibits neither the negative nor does the positive oxidation state.

Explanation

To solve the question, we need to analyze the oxidation states of the given elements: Calcium (Ca), Sodium (Na), Iodine (I), and Fluorine (F). We will identify which element exhibits only negative oxidation states, which one exhibits only positive oxidation states, and which one exhibits neither.

### Step-by-Step Solution:

1. **Identify the element that exhibits only negative oxidation state:**
- Among the elements provided, Fluorine (F) is the most electronegative element in the periodic table.
- Fluorine typically has an oxidation state of -1 in compounds because it tends to gain one electron to achieve a stable electron configuration.
- Therefore, **Fluorine (F)** is the element that exhibits only a negative oxidation state.
...