Identifying the Densest Substance on Earth
Density is a measure of how much mass is contained in a given volume. Mathematically, it's expressed as $\rho = \frac{m}{V}$, where $\rho$ is density, $m$ is mass, and $V$ is volume.
Comparing Densities of Elements
The question asks for the densest substance on Earth among the given options. We need to compare the known densities of these materials:
- Osmium (Os): Approximately $22.59 \, \text{g/cm}^3$. Osmium is a rare, hard, brittle, silvery-white transition metal.
- Platinum (Pt): Approximately $21.45 \, \text{g/cm}^3$. Platinum is a dense, silvery-white metal.
- Copper (Cu): Approximately $8.96 \, \text{g/cm}^3$. Copper is a common metal known for its reddish-brown color.
- Steel: Density varies depending on composition, but typically around $7.85 \, \text{g/cm}^3$. Steel is an alloy of iron and carbon.
Conclusion on Densest Substance
Comparing the densities:
- Osmium: $22.59 \, \text{g/cm}^3$
- Platinum: $21.45 \, \text{g/cm}^3$
- Copper: $8.96 \, \text{g/cm}^3$
- Steel: ~$7.85 \, \text{g/cm}^3$
Osmium has the highest density among these options, making it the densest naturally occurring element on Earth.
| Substance | Approximate Density (g/cm3) |
| Osmium | $22.59$ |
| Platinum | $21.45$ |
| Copper | $8.96$ |
| Steel | $7.85$ |
Therefore, Osmium is the densest substance listed.
Similar Questions
- Which scientist invented the Periodic table?
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- What element is a greenish yellow gas with a characteristic smell at room temperature?
- In the periodic table, as one goes down the group, which property doesn't change?
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- Which is the first element on the periodic table?
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Important Questions from Classification of Elements and Periodicity in Properties
- Which one of the following is the correct order of the valencies of elements Ne, Si, N and Mg?
The elements of the groups 3 to 12 are called _______ elements or transition elements.
How many electrons are there in the outermost shell of a group 16 element?
Which of the following is known as alkaline earth metal?
What is the chemical symbol of magnesium?
