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☆☆☆☆☆A lanthanide element is any element that resides in the Lanthanide series on the Periodic Table. The Lanthanide series is just under the Actinide series on the Periodic Table and is usually seperated from the main part of the Periodic Table. All of the Lanthanide elements are radioactive.
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They are silvery metals that conduct electricity
they are harder than alkali metals
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Apexvs. She wants to use standard materials to minimize negative environmental impacts. She also wants construction to move quicker.
The biggest safety concerns relating to walking surfaces are probably the various conditions and defects that can result in slips, trips, and falls.
Group 1 is on the leftmost of periodic table.It is a group of Alkali metals.It consists of Lithium,Sodium,Potassium and Caesium.
Argon (Ar) is one of them
