Lanthanide elements are elements with atomic numbers between 58 to 71 which are F-block elements. That you would find at the bottom of the periodic table. All of them are in the F-block except lanthanium which is not in the F-block but is instead in the D-block. So the lanthanide elements are named after the lightest element which is lanthanium.
While actinide elements are also fourteen elements but instead with the atomic numbers between 90 to 103 and like the lanthanide elements these elements are named after it's lightest element which would be actinium. Actinium is also in the D-block and the rest of the elements are in the F-block which is located under the lanthanide elements. But all actinide elements are radioactive.
Last one I promise. Don't worry it's over soon. So the last one would be the transactinide. These elements are considered the "heavy elements" and are the elements 104 to 121. Now these elements are also radioactive as well like the actinide but these are not found elements but instead are all made synthetically in a lab. The one physicist who thought of the idea of the actinide and the transactinide elements is Glenn T. Seaborg. Which has the element seaborgium named after him which has the atomic number 106.
See that wasn't so bad was it. So anyway hope you enjoyed my teacher time and hope you don't have to do it again....Wait I forgot I need to show you something before you fall asleep....one.....second........almost there..............yep keep going...............almost there............yay we got it. Here you go.
Th-Th-Th-Th-Th-... That's all, folks.^o^
While actinide elements are also fourteen elements but instead with the atomic numbers between 90 to 103 and like the lanthanide elements these elements are named after it's lightest element which would be actinium. Actinium is also in the D-block and the rest of the elements are in the F-block which is located under the lanthanide elements. But all actinide elements are radioactive.
Last one I promise. Don't worry it's over soon. So the last one would be the transactinide. These elements are considered the "heavy elements" and are the elements 104 to 121. Now these elements are also radioactive as well like the actinide but these are not found elements but instead are all made synthetically in a lab. The one physicist who thought of the idea of the actinide and the transactinide elements is Glenn T. Seaborg. Which has the element seaborgium named after him which has the atomic number 106.
See that wasn't so bad was it. So anyway hope you enjoyed my teacher time and hope you don't have to do it again....Wait I forgot I need to show you something before you fall asleep....one.....second........almost there..............yep keep going...............almost there............yay we got it. Here you go.
Th-Th-Th-Th-Th-... That's all, folks.^o^
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