A molecule of ammonia `(NH_(3))` has

Options

A. Only single bonds
B. Only double bonds
C. Only triple bonds
D. two double bonds and one single bond

Explanation

To determine the characteristics of a molecule of ammonia (NH₃), we can follow these steps:

### Step 1: Understand the Composition of Ammonia
Ammonia is composed of one nitrogen atom and three hydrogen atoms.

### Step 2: Determine the Valence Electrons
- Nitrogen (N) has 5 valence electrons.
- Each Hydrogen (H) atom has 1 valence electron.

### Step 3: Draw the Lewis Structure
- Start by placing the nitrogen atom in the center.
- Surround it with three hydrogen atoms.
- Nitrogen will share its electrons with each hydrogen atom to form bonds.

### Step 4: Count the Bonds
- Each hydrogen atom forms a single bond with the nitrogen atom.
- Therefore, there are three single bonds in total (one for each hydrogen).

### Step 5: Identify Lone Pairs
- After forming three bonds with hydrogen, nitrogen has one lone pair of electrons remaining.

### Conclusion
In summary, a molecule of ammonia (NH₃) consists of:
- Three single bonds (N-H)
- One lone pair of electrons on the nitrogen atom.

Thus, the correct answer is that ammonia consists of only single bonds.

---