CsOH is

Options

A. Strongly basic
B. Weakly basic
C. Slightly acidic
D. Amphoteric

Explanation

To determine the nature of CsOH (cesium hydroxide), we will analyze its properties step by step.

### Step 1: Identify the Compound
Cesium hydroxide (CsOH) is a chemical compound formed from cesium (Cs), an alkali metal, and hydroxide (OH), a polyatomic ion.

**Hint**: Remember that alkali metals form hydroxides that typically exhibit strong basic properties.

### Step 2: Understand the Nature of Alkali Metal Hydroxides
Alkali metal hydroxides, such as those formed from lithium, sodium, potassium, rubidium, and cesium, are known to be strong bases. This is due to their ability to dissociate completely in water to produce hydroxide ions (OH⁻).

**Hint**: Recall that the strength of a base is often related to its ability to dissociate in solution.

### Step 3: Analyze the Dissociation of CsOH
When cesium hydroxide dissolves in water, it dissociates into cesium ions (Cs⁺) and hydroxide ions (OH⁻):

\[ \text{CsOH} \rightarrow \text{Cs}^+ + \text{OH}^- \]

The presence of a high concentration of hydroxide ions indicates that the solution will be basic.

**Hint**: Consider how the dissociation of a compound into ions affects the pH of the solution.

### Step 4: Determine the Basicity
Since CsOH dissociates completely to produce hydroxide ions, it significantly increases the concentration of OH⁻ in the solution, which leads to a high pH. Therefore, cesium hydroxide is classified as a strong base.

**Hint**: A strong base will have a high concentration of hydroxide ions in solution, resulting in a very basic (alkaline) environment.

### Conclusion
Based on the analysis, CsOH (cesium hydroxide) is classified as a **strongly basic** compound.

**Final Answer**: CsOH is strongly basic.

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