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

Explanation

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

### Step 1: Understand the properties of metals
We need to identify a metal that has a lower density than water, which has a density of approximately 1 g/cm³. Metals that are less dense than water will be able to float on its surface.

**Hint:** Remember that density is the mass per unit volume, and a substance will float if its density is less than that of the fluid it is placed in.

### Step 2: Identify metals in the alkali group
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