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They are called the Lanthanides
Lanthanum
Cerium
Praesodymium
Neodymium
Promethium
Samarium
Europium
Gadolinium
Terbium
Dysprosium
Holmium
Erbium
Thulium
Ytterbium
Lutetium
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∙ 13y ago
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What is an allanite?
An allanite is any of a group of silicate minerals which are a source of rare earth metals.
3 characteristics for rare earth metals?
Rare earth metals tend to be soft and goldish in color.
Are The rare earth metals are a category of the alkali metals?
No.
What is rare earth metals?
Those metals which are kept deep inside the earth. They are alkaline in nature.
What are the classes of elements on the periodic table?
non-metals .... alkali metals....transition metals....alkali earth metals....rare earth metals....other metals....halogens....inert elements
Why were they named rare earth metals?
They were rare metals that are found in the earth.
What group was samarium found in?
The family that samarium belongs to is known as the Lathanide family. This family consists of 15 metals also known as the rare earth metals.
What is an allanite?
An allanite is any of a group of silicate minerals which are a source of rare earth metals.
Why were rare earth metals the last elements to be found?
only small amounts exists
3 characteristics for rare earth metals?
Rare earth metals tend to be soft and goldish in color.
Are The rare earth metals are a category of the alkali metals?
No.
What family does cerium belong to?
Cerium is an element that is found in the Earth's crust. Cerium is in the Lanthanide family which is made up of rare earth metals.
What is rare earth metals?
Those metals which are kept deep inside the earth. They are alkaline in nature.
What are the chemical groups on the periodic table?
Alkali metals, Alkali Earth metals, Rare Earth metals, Transition metals, Non metals, Halogens, Inert gases
What are the classes of elements on the periodic table?
non-metals .... alkali metals....transition metals....alkali earth metals....rare earth metals....other metals....halogens....inert elements
What is the first member of the rare earth metals?
beryllium
How many valance electrons do rare earth metals have?
16.546 valence electrons are located in all rare earth elements.
