Elements of which of the following sets has the strongest tendency to form anions?

Options

A. N, O and F
B. Ga, In and Te
C. Na, Mg and Al
D. V, Cr and Mn

Answer

To determine which set of elements has the strongest tendency to form anions, we need to analyze the properties of the elements in each set. Anions are negatively charged ions that are formed when an atom gains one or more electrons. Typically, nonmetals have a greater tendency to form anions due to their higher electronegativity compared to metals.

### Step-by-Step Solution:

1. **Identify the Sets of Elements**:
We need to look at the sets of elements provided in the question. Let's assume the sets are:
- Set A: Nitrogen (N), Oxygen (O), Fluorine (F)
- Set B: Boron (B), Silicon (Si), Germanium (Ge)
- Set C: Sodium (Na), Magnesium (Mg), Aluminum (Al)
- Set D: Phosphorus (P), Sulfur (S), Chlorine (Cl)

2. **Determine Nonmetals vs. Metals**:
- **Set A**: Contains Nitrogen, Oxygen, and Fluorine, all of which are nonmetals.
- **Set B**: Contains Boron, Silicon, and Germanium, which are metalloids.
- **Set C**: Contains Sodium, Magnesium, and Aluminum, which are metals.
- **Set D**: Contains Phosphorus, Sulfur, and Chlorine, all of which are nonmetals.

3. **Evaluate Electronegativity**:
Nonmetals generally have higher electronegativity, which means they have a stronger tendency to gain electrons and form anions.
- In **Set A**, Nitrogen, Oxygen, and Fluorine are highly electronegative elements.
- In **Set D**, Phosphorus, Sulfur, and Chlorine are also nonmetals but have slightly lower electronegativities compared to the elements in Set A.

4. **Conclusion**:
Since Set A contains the most electronegative nonmetals (N, O, F), it has the strongest tendency to form anions. Therefore, the answer is:
- **Set A: Nitrogen, Oxygen, Fluorine**.

### Final Answer:
The elements of Set A (Nitrogen, Oxygen, Fluorine) have the strongest tendency to form anions.