Name the metal which floats on water without any apparent reaction with it .

Explanation

To answer the question, "Name the metal which floats on water without any apparent reaction with it," we can follow these steps:

### Step 1: Identify the properties of metals that float on water
- Metals that can float on water must have a density less than that of water, which is approximately 1 gram per cubic centimeter.

### Step 2: Consider the alkali metals
- Alkali metals are known for their low densities. Among them, we need to find one that has a density less than that of water.

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