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Uranium because uranium has the highest atomic number, 92, of the natural, actinide elements. Elements higher than 92 are man-made elements. Check the periodic tables to see for yourself!~

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15y ago
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13y ago

Uranium, thorium, actinium, protactinium; in extremely low concentrations, also plutonium and neptunium.

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6y ago

This element is plutonium (Pu).

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13y ago

uranium

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Q: What actinide element is the heaviest that occurs naturally on earth?
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Related questions

Which element is the heaviest actininde that occurs naturally on earth?

Uranium is the heaviest naturally occurring actinide.


What is the heaviest actinide that occurs naturally on Earth?

Uranium


What element is the heaviest actinide that occurs natrually on earth?

Uranium


Which actinide element is the heaviest that occurs natturally on earth?

URANIUM (:


How fluorine is made?

Fluorine is an element. It occurs naturally.


Where does the element neon naturally occurs?

In the atmosphere.


What is the smallest part of an element that occurs naturally?

It is the atom


What is the smallest part of a element that occurs naturally?

atom is the smallest part of element


Does copper occur naturally as an element or as a compound?

the answer is that it occurs as a compound, not an element


Is bromine synthetic?

No, Bromine is not a synthetic element, it occurs naturally


What element is a poisonous gas and occurs naturally in the soil?

Radon


What makes iron?

Iron is an element and occurs naturally in the universe. It is not made.