Saturn is less dense than water. So the Answer is Saturn.
A planet's weight does not determine whether it can float in water. It's density is what determines that. Your question should be "Which planet's density is so small that it could float in water?"
Saturn is the second-largest planet in the solar system and also the least dense planet. It is less dense than water. In other words, if there was a big enough bath tub, Saturn would float in it.
Saturn is the least dense planet, only 0.7 g/cc on average (less than water's density). If you could put Saturn in bathwater, it would float.
The least massive of the 8 major planets is Mercury. However, Saturn, with its large, deep atmosphere, is the least dense of the planets, and would actually float in water (given a really big container of water).
Saturn is the planet with the lowest density in our solar system, which is less than that of water. This means that, theoretically, Saturn would float if placed in a large enough body of water. Its low density is primarily due to its gaseous composition, primarily hydrogen and helium, which contributes to its lightness compared to other planets.
Saturn. The planet is less dense than water.
Saturn. It is the only planet in the solar system that is less dense than water.
A planet's weight does not determine whether it can float in water. It's density is what determines that. Your question should be "Which planet's density is so small that it could float in water?"
In the Solar System the answer is Earth since it is the only planet that has water.
Mars is the other planet in our solar system besides Earth that has water.
Saturn is the second-largest planet in the solar system and also the least dense planet. It is less dense than water. In other words, if there was a big enough bath tub, Saturn would float in it.
earth
Saturn is the least dense planet, only 0.7 g/cc on average (less than water's density). If you could put Saturn in bathwater, it would float.
Earth
Theoretically, the planet Saturn would float when placed in water because it has an average density that is less than the density of water. On the other hand, there is probably not enough water in the solar system to permit the experiment to be performed. If you choose not to consider the planet as a whole, the atmosphere would float on the water but the rocky core would sink like a stone.
Saturn is the only planet in our Solar System that is less dense than water. Saturn would float if there were a body of water large enough!♥♥
That is the planet Saturn.