How many elements are named after solar planets?

Answer 1

Two are named for major planets: uranium (Uranus) and neptunium (Neptune).

The element mercury is named for the Roman god of speed, as was the planet; but the element was not directly named for the planet.

Two are named for minor planets: cerium (Ceres) and plutonium (Pluto).

If the asteroid Pallas is promoted to minor planet status, then palladium will join that list.

but the most common element named after a planet is uranium(uranus).

Answer 2

There are five elements named after solar planets: Uranium, Neptunium, Plutonium, Cerium, and Palladium.