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Elements with atomic numbers 89-94: natural elements.
Elements with atomic numbers 95-98: artificial elements but they are also discoverd in nature as ultratraces.
Elements with atomic numbers 99-103: artificial elements.

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Related Questions

Is actinide considered a synthetic element?

Actinide is not an element, but is a series of elements. Of the actinide series of elements, all except actinium, thorium, protactinium, and uranium are considered to be synthetic elements because they are not found in nature in appreciable amounts.


What family is radioactive elements?

The Actinide series.


What family is all radioactive elements?

The Actinide series.


What are the series of inner transitions elements and what is a trait of each?

The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.


The lanthanied actinide series make up the inner transition metals true or false?

True. The lanthanide and actinide series make up the inner transition metals. The lanthanide series includes elements with atomic numbers 57-71 (lanthanides), while the actinide series includes elements with atomic numbers 89-103 (actinides).


What name is given to the elements ninety to one hundred three?

The Actinide Series


What are the two series of inner transition elements and what is the trait of each?

The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.


Which block on the periodic table contains the actinide series of elements?

The actinide series of elements can be found in the f-block of the periodic table, specifically in the 7th row. These elements are known for their radioactive properties and include well-known elements such as uranium and plutonium.


Are all actinids radioactive?

There are a total of 15 actinides in the actinide series and each are chemical elements with metallic properties. All of the actinide elements are radioactive and upon radioactive decay they release energy.


What family does fermium belong to?

Fermium is a member of the actinides group.


What is the name of two series of inner Transition elements?

The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.


Is thorium belonged to f block elements?

Yes, thorium is a member of the group of f blockelements.