1 equivalent of complex X of composition `Co(NH_(3))_(5)Cl_(n)` reacts with two equivalent of `AgNO_(3)` and does not show geometrical isomerism. The IUPAC nomenclature of X is `:`

Options

A. Hexaamminecobalc (III) chloride
B. Pentaamminechlorocobalt (III) chloride
C. Tetramminedichlorocobalt (III) chloride
D. Triamminetrichlorocobalt (III) chloride

Explanation

To solve the problem, we need to determine the IUPAC nomenclature of the complex \( \text{Co(NH}_3\text{)}_5\text{Cl}_n \) based on the information provided.

### Step-by-Step Solution:

1. **Understanding the Composition**:
The complex is given as \( \text{Co(NH}_3\text{)}_5\text{Cl}_n \). Here, cobalt (Co) is the central metal ion, and it is surrounded by five ammonia (NH3) ligands and n chloride (Cl) ligands.

2. **Determining the Number of Chloride Ions**:
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