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All the isotopes of uranium and plutonium are radioactive; plutonium isotopes have a greater specific activity.

For cerium: the isotopes 136Ce and 142Ce are possible to be radioactive but having very long half lives and a not significative radioactivity.

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Related Questions

How many elements are named after solar planets?

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).


How many elements are named after the universal planets including pluto?

There are eight elements named after the universal planets, which includes Pluto. These are Uranium, Neptunium, Plutonium, Cerium, Palladium, Tellurium, Selenium, and Mercury.


Is uranium in the lanthanide family?

cerium is atomic number 58 element and is in lanthanoide family and is a transition metal


What was the chemical element uranium named after what planet?

It was the other way round. Uranium was named after a planet. That planet was Uranus.


Which nine elements are named after objects in outer space?

The nine elements named after objects in outer space are Mercury, Uranium, Neptunium, Plutonium, Cerium, Palladium, Tellurium, Selenium, and Titanum.


What chemical family is uranium in?

the pereodic table of elements.rare earth.other things in that section:lanthanium,cerium,praseodymium,neodium,promethium,samarium,europium,gadolinium,terbium,dysprosium,holmium,erbium,thulium,ytterbium,luttium,actinium,thorium,proacttinium,uranium,neptunium,plutonium,americium,curium,berkelium,californium,einsteinium,fermium,mendelevium,nobelium,lawrencium.


Which element has the following configuration Xe6s24f15d1?

[Xe] 6s2 4f1 5d1.There are a total of 58 electrons. Or the atomic number is 58 and the element is Cerium


Physical state of cerium at room temperature?

The metal curium is normally a solid at anything close to "normal" temperature. It melts at well in excess of 1000 °C. Curium is a synthetic trans-uranium element; it is not found in nature. A link can be found below.


How many atomic mass in cerium?

Cerium is a metal element. Atomic mass of it is 140.


What is the origin of element cerium?

German


Is curium dangerous element?

Yes, curium is a highly radioactive element that is considered dangerous when handled in large quantities or in close proximity to humans. It can pose health risks if not properly handled and controlled due to its ability to emit harmful radiation.


Is the element cerium stable or reactive?

cerium is reactive, if hit with a sharp object it will combust and release nitrogen and hydrogenated carbon. it is the most stable of the rare earth elements though