Which one of the following is the correct sequence of arrangement of the given planets in descending order of their density (in gm/cm3) ?

The density of planets in our solar system is primarily determined by their composition. Terrestrial planets (Earth, Venus, Mars, Mercury) are composed of rock and metal, making them significantly denser than the Jovian gas giants (Jupiter, Saturn, Uranus, Neptune).

• Earth: It is the densest planet in the solar system with an average density of approximately 5.51 g/cm³.
• Venus: Similar in size and composition to Earth, it has a high density of about 5.24 g/cm³.
• Jupiter: As a gas giant composed mainly of hydrogen and helium, its density is much lower, at approximately 1.33 g/cm³.
• Saturn: It is the least dense planet in the solar system with a density of only 0.687 g/cm³, which is less than the density of water.

Based on these values, the correct descending order of density is Earth > Venus > Jupiter > Saturn.